Firstly Harper,
Good to have you with us at last

. Windows is the best for gaming so's I'd keep XP for gaming Purposes, dual booting would be the way to go but online gaming should be fine. just keep windows for installed Games...
there are many many games for Linux you can find a list here:
http://www.tech-forums.net/showthrea...hreadid=112751
and there are many links to gaming sites in the
useful list of linux websites post at the top of this forum
I don't know much about PDAs but any distro should work with some tweaking
as for which distro, Now your going to get baised opions here but tyr these 2 Linux distro choosers:
http://eedok.voidofmind.com/linux/chooser.html http://www.zegeniestudios.net/ldc/
a few personal reccomendations:
Kubuntu
http://www.kubuntu.org/
Mandriva
http://frontal2.mandriva.com/en/downloads/mirrors
PCLinuxOS
http://www.pclinuxos.com/page.php?7
This is the distro I use and recommend, Why because it works right out of the box. No need to configure Everything, everything just works. It also comes as a 1 CD install that is a live CD that you can install later if you wish.
OPENSUSE
http://www.opensuse.org/Download
Mephis
http://www.mepis.org/
Everything you will ever need on 1 CD. Hardware detection is exelent, as is the feel and look of the distro
hope this Helps,
Jake