with that minimal configuration (you're not really giving it a fair shot by the way) Linux will run fine in text mode, but the KDE or Gnome desktops will be unpleasant and SLOOOOOW. Another Window manager may be tolerable. (Would you run Windows XP on that and expect a good result?)
Anyway, start with slackware 10.2 is the latest. (9.1 is still downloadable and can be better for meager resources so try that if this doesn't work out.) The full 10.2 takes over 3 gig of HD space (other distributions take much more, so you would really have to prune ti fit that 2.1 drive. Again, Windows now requires what 2 GIG's for just the OS. This is also with many applications.
It is a 2 CD download and you get it for free here:
http://iso.linuxquestions.org/distro.php?distro=1There is a LOT of good support online. Just know what your hardware is goinfg in, an ask if you have questions. The only requirement is you can't just run it for 15 minutes and say "I don't like it....it's not like Windows".
You can also download and run DSL (D*amn Small Linus) quicker on that machine.
http://www.damnsmalllinux.org/download.htmlBroadband connection is suggested, but there are SOME workarounds if you are stuck with dialup.
Be sure and post back or PM me.