Ive Completed Jedi Academy many times and its getting a bit boring, I can mod Kotor,tsl and battlefront 1/2 and I want to start modding academy.
Ive searched the whole net looking for a tutorial on modding but i cannot find 1 can some 1 teach me how to mod ja or direct me to a tutorial that will get me started.

(I can build maps but Can some1 also tell me how to make them a pk3 file)

For mapping you might want to get started with this site:

http://www.darthg.com/richdiesal/tutorials/index.html)

For general modding i'd look up the JA SDK.

thanks i'll take a look

A .pk3 is just a zipped file renamed to .pk3 (with proper directory structure).

Ok I know how to do pk3s but now I need help with 2 more things
Wheres Microsoft visual C++
and radiant only saves as map files, academy uses bsp files how do i convert them

You gotta compile it, the link I gave you will give the instructions. MS VC++ is a compiler you have to pay for :/. There are ways to get it compile with free compilers, but I don't know much on how to do that :/