corel problem

Hello. I recently had a problem, I caught the virus. The virus has damaged many files fortunately most of them games. But suffered a couple of sketches needed for my work. They do not open. Sketches made in CorelDRAW X4. How to get them back in working condition? Is there such a way?

try this maybe this will help you out http://howto.corel.com/en/c/How_To:_Recover_Corrupted_CDR_Files