If I may chime in....
Scott,
SBS 2008 is a very nice offering from MS in that you get all the big Enterprise stuff for far less than the Enterprise price. However, managing SBS does require several skillsets. If you truly wish to wrap your head around this wonderful product, I recommend your taking the time to dig your eyeballs into this book:
Windows Small Business Server 2008 Unleashed
You can find that book here:
Book There is a lot to know about SBS 2008 and I'm afraid asking a few questions on a forum or surfing a few blogs/articles about how to install it simply isn't going to get you what you want. Furthermore, most of the online resources, such as blogs and so forth, typically deal with one-off situations - such as what to do when so-and-so error occurs. Rarely will an online resources carry you through the entire experience of whatever product you are talking about and teach you everything you need to know.
Incidentally, 6G of RAM should be enough for a network of 10 or fewer users.
JamesNT