Extraction Q.

[UnleasheD]

Just a quick newbie question. Here's the situation::: I have used the serial slave disc,cable and terraterm(with macros) to grab an ISO from Slave Zero to test my processes. I get a file about ~900k (track03.iso.gz) that turns into track03.tar.gz (I think). I extract it using Winzip and get an error so I try Winrar. Winrar uncompresses fine. So now I have a ~700mb Track03.iso file. I use the command line tool "Extract.exe" and type from the prompt "extract track03.iso" and it inflates a load of files in that dir. The problem, and the question I am having is, all the files have a size of 0kb (Zero). Is there anything I am doing wrong here? I have followed a couple of ripping guides and I get the same results.
Thanks.