Quickpar just verifies that all your rar files are intact. If any are missing or corrupt and you have enough par files to repair them, you can do that with a click of a button. Assuming all your rar files are ok, you can use WinRAR or IzArc or pretty much any archiving program that supports rar files to open the rars. Just open that .rar or .r01 file (might be able to open any of them, I've never tried that) and extract the contents to a folder on your hard drive.