If you want to give Linux a go without any hassle, try Knoppix. It's a fully operational distro that boots from CD.
If you are interested in learning the ins and outs of Linux, then my suggestion would be Gentoo. I learnt more installing that than I ever did playing around with Suse or Mandrake.
If you're going with Debian I recommend you make an initial choice between Stable or Unstable. I started my Linux experience with Debian Testing, and that shuuure was a mess.... (broken packages all over the place). For a newbie I think Mandrake would be a good place to start. I would say only start out with Debian as first distro if you have close friend(s) that knows it in and out....
thanks a lot for the advices... i guess ill try Gentoo or Debian distro (mepis i guess)im more inclined to debian because the debian section on rarewares and i like a lot the jigdo system to download the Images, but i was wondering if gentoo or mepis could have a similar system.thanks again for the advices
You can also install cygwin and use that instead.