Easy+Application Based+First Time Linux User=SuSE 8.2
I have looked at Debian and I must say that if your going Linux for the first time go with SuSE 8.2. It is easy to install and understand and is more application oriented. Meaning that you don't have to spend 5 days setting up the OS just so you get a GUI interface.
Plus, of the Linux mods that are easy to install (Red Hat, Mandrick, SuSE), SuSE seems to have the least amount of problems. Easiest way to prove my point is to check out this and the NVIDIA Graphics page. Most of the threads discussing problems are for Red Hat (35%), Mandrick (45%), and SuSE (10%). These percentages are not completely accurate, but you'll see my point if you look at the forum.
Once you get a general idea of what Linux is and how it works, then move to something more reliable like Debian or Slackware.
AMD Athlon 2500+
MSI K7N2 Delta-L w/ nForce 2
GeForce 4 Ti4400
SuSE 9.1 w/ 2.6.5-7.95-default