Download help?!

Hello! I have download some weapons and maps but like 2 maps and none weapons work ! I use Jzip not winrar but it should work anyway? help me plzz (sry for my english)

Another thing is that i have downloaded winrar but it use Jzip as main or what u can call it… do i needto delete Jzip? or just a button somewhere?

One thread is enough, check the old one.