Welcome to the Linux world, Sega!
I've been using Ubuntu for the last 4 years. I have tried Ubuntu, Kubuntu, Xubuntu, several versions of Mandriva, **** Small Linux, Puppy Linux, several versions of openSuSe, Fedora Core 8, Fedora Core 9, and quite a few more.
My hands down choice? Ubuntu. Kubuntu and Ubuntu are pretty much the same with the exception of Ubuntu=Gnome, Kubuntu=KDE. I personally prefer Gnome... I'm not a big fan of KDE at all.
Ahh, to your question at hand... the RTL8187B... man aren't you lucky! I have that in my laptop, and to date I haven't been able to get it to work. But go ahead, ask me how much I've worked on it? Sadly, not much at all!
One of these days, I will try out the very link I'm about to send you in hopes of getting it to work.
[all variants] HOWTO: Get RTL8187B (ID: 8197) Working. Step by Step - Ubuntu Forums
Note: "I can confirm that no encryption and passphrase WPA works with network manager.
WEP doesn't work properly. I think its a problem with open key."
Let me know how this works out for you! Once I get my rsync network project figured out on my Ubuntu desktop, I plan to tackle my Ubuntu laptop's wireless. Until then - I'm content running my laptop in XP since all I use it for is AIM and Firefox. (hence my laziness)