www.theoldcomputer.com

I'm somewhat new to the ROM world, but I have only sucessfully unzipped one file from your site. (The Sega Genesis 'Warsong' worked beautifully.) Every other ROM I try to unzip gives me an 'unzip failed' error. I tried to do it on my PC instead and it told me there was 'no archive'.
I know I'm missin' somethin'. Any advice?

That sounds very peculiar. Not sure what the exact problem could be. I downloaded Warsong and a few others like Tel Tel Stadium and they all worked for me. Could it possibly be the program your using to unzip them?
Try winrar and see if that makes a difference.
Also, if it still isnt workin for you, wait until the transfer to the new download section is complete and you will probably have better luck.