Why won WinZip open the tar (or tgz) file properly?
Some web browsers mistakenly save .tgz files (such as the daily CVS snapshots) with a .tar extension after downloading. Rename the file to .tgz so WinZip will know how to deal with it properly. WinZip may then tell you that the archive contains a single .tar file, and ask if you want to decompress it to a temporary file and open it. This is actually correct — the .tgz is a compressed version of a single .tar file, which is what you want to open. Answer yes and it will do the right thing.