when is come out a version of lime wire for windows 7??? because its not working on it.

Win 7 is included in the list of OSs for the Windows platform for the latest LW version: Get LimeWire for Your Platform - Lime Wire

You might find some more info here (click on link): LimeWire Forums
Check out the LimeWire 5 and Bugs & Beta Testing sections - I think some Win 7 users have posted there in the past.

Since you're posting in English, I'll move this out of the español section

I already paid for Limewire 5, about a month ago. Had to restore Windows 7 due to graphics problems. This erased my Limewire program. How do I get this back without paying another fee?

Providing you bought LW from here, you will be able to re-download your copy of Pro from the link in the email that was sent to you.