i got bit zipper and win rar to be able to download the dll files from this site but now some of my files will not work cus they are being opened with bit zipper (such as my rsbot.jar) and ive tryed opening with many programs on my comp but none seem to be right can anyone plz tell me wat i should be using to run these files.

P.S. my OS is Win 7 Home Premium 64-bit