I Dont know how to get to my GameData folder because i downloaded Repcom on steam. I would like to download the warpack and set my mouse sensitivity to 0.7 but i cant do that now...

thanks

I don't really know about the GameData folder, but I think there's a main folder inside the Steam one that hold all your games. Someone else in Redcell that also runs Repcom through Steam could probably help.
The sensitivity can be set ingame. Just do what you would to get into a pub, and I believe the console command is "setsensitivity #" with the number you enter being half of the preferred value. So, if you wanted 0.7 as your sensitivity you would enter 0.35 in the command. This is what I was told and it seemed to work for me, so if it doesn't work out I'm sorry.
Good luck with it!

C:\Program Files\Steam\steamapps\common\Star Wars Republic Commando\GameData\

possibly

C:\Program Files (x86)\Steam\steamapps\common\Star Wars Republic Commando\GameData\

To set sensitivity, go in-game, hit ~ and type, setsensitivity 0.7
Hit enter und BAM.

Thanks! Everything is working fine now

Good to hear