I'm currently on LinuxXP, a windows emulator, but I think I'm finding that's it's not alot different from other distro's. Ubunto isn't far off from it though, I run ubunto in live mode only, but I haven't run it in a while, pretty much stuck on this LinuxXP. as far as games go, I'm not entirely sure about wine, but it might get it going right. also, for your online games, there are some that offer linux downloads for the games. might also check into that
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Current system: Shuttle Running 1.23GHz Intel Celeron, 256 ram, XP Home 120GB hdd
Building new system w/ EVGA 680i mobo, 2 gig Mushkin 4-4-4-12 RAM Intel q6600, EVGA 9800GTX, sitting in an XClio Windtunnel