I checked the F&Q threads, but to be honest I'm not exactly sure what I'm looking for. I just want to be able to edit the models within the game, since I've seen loads of customized troops and vehicles. Are there any programs that will be able to help me craft my own models, or even using the default models they give you in the mod tools? Thanks.

do you want to edit the skins of the models? (color...)
or do you want to edit the form, shape... of shipped models?
if you want to do this, you will find everything you need here (<--click it!)
please read the tread carefully