Yes there are:
http://www.lucasforums.com/showthread.php?t=143421

and more precisely to make new weapon models you'll need: http://www.lucasforums.com/showthread.php?t=134510

If you only want to edit stats, then you only need KotOR Tool with Microsoft.net framework 1.1 installed.

http://pcgamemods.com/

http://www.lucasfiles.com

More options here, including personal websites:
http://www.lucasforums.com/showthread.php?t=143413

and to help you chose:
http://www.starwarsknights.com/mod_week.php

There's some Kotor fanfic here too: http://www.lucasforums.com/forumdisplay.php?f=640

Jeez! You guys are quick to jump to conclusions :ph34r:

No, I didn't die from eating too much pie or doing math...I'm still alive! Sorry if this is disappointing   roll  Just been caught in some other things that do not involve math or eating pie...

You should find what you need here: http://www.starwarsknights.com/tools.php

Kotor Tool has a build-in area editor. However, importing new area models in the game is still impossible: you can only re-use existing areas but you can change all the contents and you can also reskin them to make them look different.