would have to agree with Zedric, have used Linux since 1993 off and on, nix is more stable then Windows, however, not as much as it used to be. Windows XP and w2k are very stable.
the biggest cons for nix is the applications and the GUI, while it certainly has came around lately in both departments it is seriously still way behind windows.
The biggest hurdle is user friendliness, for n00bs I suggest you try either Mandrake or Red Hat distros, they are the easiest to install and run, however once you get the hang of it, get rid of both and use either Slackware, FreeBSD, RootLinux, or Debian.
Stay away from Lindows, it will only confuse you more.