Forum Moderators: coopster
.tar is like a zip file, but the program used for compression is called Tar (not winzip).
.gz is also a compressed file, compressed by a program called Gunzip
.tar.gz usually means that some files were compressed using Tar and the compressed AGAIN using gunzip to make the compressed file smaller.
You can use either WinRAR or WinZip to look at these files (WinRAR is better for tar and gz files).
you can get WinRAR at www.rarlab.com
Winzip you can get at www.winzip.com.
I'm not sure myself what .bz is, but it's probably also a way of compressing files.