This should be fairly easy. Just keep the following pointers:
1. Mambo and SMF should be installed on the same DB with different prefix. E.g.: "mos_" for mambo "smf_" for smf. So, just install Mambo on the SMF db.

2. On the component config, you can choose wrapped or unwrapped. But, you should at least know how to play with the SMF template to make it look good in wrapped mode.

That's it, when SMF member signin, they will automatically be added to the Mambo DB.

The component and module are through the mambo admin page. The  SMFMamboMod is through the SMF package manager.

Well, it is almost going painlessly... Now getting the following message:

INSTALLATION CHECKLIST:
installed Install SMF Forum on the same database as Mambo.
not published Install mod_smf_login module and publish it.
installed Install SMFMamboMod.zip using your SMF Package Manager.
apply Insert code to mambo template.

The thing is, I did upload it via the Modules page and it appears to be installed.  Any ideas?  Where would I publish this from. Everywhere I see anything that says 'login' associated with a module it says that it's published.  Does this have to be in the same directory as Mambo or SMF?  My SMF and Mambo installations are in their respective directories.  Do I have to have SMF as a subdirectory of Mambo?  I'll try that I guess.

The admin page says that upload/install was successful after I browse for file and click 'upload/install'; but when I go to the screen you say to publish it, the module is not listed?

Any ideas?  Otherwise, this is really easy.

Okay, now I'm a bit stumped on the CSS for the template I'm using.  If you set up an account @ www.dubbia.com/mambo, you'll notice that on the left hand menu some text is black on black which is hard to read.  I cannot seem to get the text to be visible.  I would any text that is not a link to be white.  Here is the css info:

TABLE {
   FONT-SIZE: x-small; COLOR: #666666; FONT-FAMILY: Verdana,Arial,Helvetica,sans-serif
}
TD {
   FONT-SIZE: x-small; COLOR: #666666; FONT-FAMILY: Verdana,Arial,Helvetica,sans-serif
}
P {
   FONT-SIZE: x-small; COLOR: #666666; FONT-FAMILY: Verdana,Arial,Helvetica,sans-serif
}
BODY {
   FONT-SIZE: x-small; COLOR: #666666; FONT-FAMILY: Verdana,Arial,Helvetica,sans-serif;
}
A {
   COLOR: #333;
   text-decoration: underline
}
A:visited {
   COLOR: #333
}
A:hover {
   COLOR: #B51000;
}
A.promolink {
   COLOR: #ffffff
}
A.promolink:visited {
   COLOR: #ffffff
}
A.promolink:hover {
   COLOR: #ffffff;
}
.module {
   COLOR: #a5a5a5
}
A.module {
   COLOR: #333399
}
A.module:visited {
   COLOR: #333399
}
A.module:hover {
   COLOR: #ffffff;
}
A.navhead {
   FONT-WEIGHT: bold; COLOR: #ffffff; TEXT-DECORATION: none
}
A.navhead:visited {
   FONT-WEIGHT: bold; COLOR: #ffffff; TEXT-DECORATION: none
}
A.navhead:hover {
   FONT-WEIGHT: bold; COLOR: #ffffff; TEXT-DECORATION: underline
}
A.navmenu {
   COLOR: #ffffff; TEXT-DECORATION: none
}
A.LINK:unknown {
   COLOR: #ffffff; TEXT-DECORATION: none
}
A.navmenu:visited {
   COLOR: #ffffff; TEXT-DECORATION: none
}
A.navmenu:hover {
   COLOR: #ffffff; TEXT-DECORATION: underline
}
.promo {
   PADDING-RIGHT: 12px; PADDING-LEFT: 12px; FONT-SIZE: xx-small; PADDING-BOTTOM: 12px; PADDING-TOP: 12px
}
.alt-promo {
   FONT-SIZE: xx-small
}

#bgEA6B27 {
   COLOR: #ffcc00; BACKGROUND-COLOR: #A5A5A5
}
#bg0453A2 {
   COLOR: #ffffff; BACKGROUND-COLOR: #A5A5A5
}
#bg21274D {
   COLOR: #ffffff; BACKGROUND-COLOR: #A5A5A5
}
#bgEEEEEE {
   COLOR: #ffffff; BACKGROUND-COLOR: #eeeeee
}
.module {
   COLOR: #ffffff; BACKGROUND-COLOR: #eeeeee
}
.textbox {
   FONT-SIZE: xx-small; COLOR: #999999
}
.leftmenu {
   FONT-WEIGHT: bold; FONT-SIZE: xx-small; COLOR: #ffffff; BACKGROUND-COLOR: #222
}
.leftmenu A {
   COLOR: #A5A5A5
}
.leftmenu A:visited {
   COLOR: #A5A5A5
}
.leftmenu A:active {
   COLOR: #ffffff
}
.leftmenu A:hover {
   COLOR: #ffffff
}
UL {
   MARGIN: 0px 0px 15px 15px
}
LI {
   PADDING-BOTTOM: 4px
}
LI.body {
   PADDING-BOTTOM: 8px
}
.footer {
   FONT-SIZE: xx-small; COLOR: #ffffff
}
.subhead {
   PADDING-RIGHT: 4px; PADDING-LEFT: 4px; FONT-WEIGHT: bold; FONT-SIZE: x-small; PADDING-BOTTOM: 4px; COLOR: #ffffff; PADDING-TOP: 4px; BACKGROUND-COLOR: #FFF
}
A.topnav {
   BACKGROUND: none transparent scroll repeat 0% 0%; TEXT-DECORATION: none
}
A.LINK:unknown {
   BACKGROUND: none transparent scroll repeat 0% 0%; TEXT-DECORATION: none
}
A.topnav:visited {
   BACKGROUND: none transparent scroll repeat 0% 0%; TEXT-DECORATION: none
}
A.topnav:hover {
   BACKGROUND: none transparent scroll repeat 0% 0%; TEXT-DECORATION: none
}
.heading {
   FONT-WEIGHT: normal; FONT-SIZE: 25px; COLOR: #B51000
}
H1 {
   FONT-WEIGHT: normal; FONT-SIZE: 25px; COLOR: #B51000
}
H2 {
   FONT-WEIGHT: normal; FONT-SIZE: 22px; COLOR: #B51000
}
H3 {
   FONT-WEIGHT: normal; FONT-SIZE: 19px; COLOR: #B51000
}
H4 {
   FONT-WEIGHT: normal; FONT-SIZE: 16px; COLOR: #B51000
}
H5 {
   FONT-WEIGHT: normal; FONT-SIZE: 13px; COLOR: #B51000
}
H6 {
   FONT-WEIGHT: normal; FONT-SIZE: 10px; COLOR: #B51000
}
.contentheading, .componentheading {
  font-family      : Verdana, Arial, Helvetica, sans-serif;
  font-size        : 12px;
  font-weight      : bold;
  color            : #B51000;
  text-align       : left;
}

.small {
  font-family      : Verdana, Arial, Helvetica, sans-serif;
  font-size        : 11px;
  color            : #666;
  text-decoration  : none;
  font-weight      : normal;
}

.pathway {
  font-family: Verdana, Arial, Helvetica, sans-serif;
  font-size: 11px;
  color: #ffffff;
}

a.pathway:link, a.pathway:visited {
  color            : #ffffff;
  font-weight      : normal;
}

a.pathway:hover {
  color            : #ffffff;
  font-weight      : normal;
  text-deoration   : underline;
}

.createdate {
  font-family      : Arial, Helvetica, sans-serif;
  font-size        : 10px;
  color            : #999999;
  text-align       : left;
}

.button {
  font-family      : Verdana, Arial, Helvetica, sans-serif;
  font-style       : normal;
  font-size        : 10px;
  font-weight      : bold;
  background-color : #F0F0F0;
  color            : #ffffff;
  border           : 1px solid #CCCCCC;
}

table.moduletable {
        margin: 0px 0px 0px 0px;
        width: 95%;
        border-left: solid 0px #000000;
        border-right: solid 0px #000000;
        border-top: solid 0px #000000;
        border-bottom: solid 0px #000000;
        }

table.moduletable th {
  font-size        : 11px;
  font-weight      : bold;
  color            : #FFF;
  text-align       : left;
  text-decoration  : none;
  width            : 100%;
  background-image: url(../images/star.gif);
  background-repeat: no-repeat;
  padding-left: 17px;
}

table.moduletable td {
        font-size: 10px;
        font-weight: normal;
}
.daynames a {
  color            : #333;
  font-weight      : normal;
  text-deoration   : none;
}
.daynames a:active {
  color            : #333;
  font-weight      : normal;
  text-deoration   : none;
}
.daynames a:visited {
  color            : #333;
  font-weight      : normal;
  text-deoration   : none;
}
.daynames a:hover {
  color            : #B51000;
  font-weight      : normal;
  text-deoration   : none;
}