most games don't have individual patches to download thats why you have to use a patch engine. the patcher included in newer versions of isocraction is the best out at the moment it can patch newer games that even copy haunters v 2.0 patcher can not.
if you want trainers. ie cheats that you burn with the game you can get some from here.
www.xbox-newz.de
but there mainly for german games you could also try a search via google.