Not to be butting in or kibutzing...but I would suggest Linux Mint for a first try. It's very. very nice and easy to set up. I used it for my first Linux try and it was great on my laptop. Everything worked right off, even the wireless. I now use it on my big desktop. It rocks.
by all means, butt in. :-)
The funny thing is that Mint just released Ver 8 today.
http://distrowatch.com/?newsid=05795
Don't get me wrong, I like my XP computer and I plan on trying Windows 7 when I finally get around to upgrading my computer hardware, but I've always wanted to give Linux a major try and I'm almost ready to do it. I just can't put it on something that I use all the time. It needs to be on a spare PC so I can play with it.
Thanks for the advice.