Welcome to LucasForums, therealherger
I don't believe that there any mods available for the xbox version of Republic Commando, although I could be wrong about it.
Originally Posted by Ulmont
Ehh, I'm not sure if it's illegal.
As far as I can tell it is at best a legal grey area, and I think it's best to err on the side of caution, so to curtail any further discussion about the topic i'm going to close this thread.