@botenannie: Don't know what you are talking about... we are using 7-Zip on hundreds of Windows 7 PCs (x32+x64) without any problems. 7-Zip is fast, lightweight and free, so I'll give 4 Stars
This program is a piece of shit. Didn't open basic files or basic operations. If it doesn't work for Windows 7, it should say so.
This Tool Is A Legend Its Extreme Popular but Still Having Problems With Iso Files !
Amazing, 7-Zip even decompressed a 29 GB file which WinZip and WinRar were not able to do!