Welcome back then Jorge
You'll find a hell of a lot more mods and maps than before you went AWOL
You can make use of your new hardware with the recent video and audio updates. the old UT looks amazing with hi-res textures and modern renderers. http://www.ut99.org/viewtopic.php?f=15&t=4569&start=0
Take my favourite remake of CTF-Face as an example. All hi-res textures.
[youtube]lk2QmeoLwH8[/youtube]
Check the link at the top of the forum Tweak Your UT Graphics To The Maximum!
I hope you find plenty of maps and mods here to give your UT a boost. Lots of useful stuff gets posted here regularly