Thanks guys. I unzipped a few roms and then it worked. A couple more questions however:
Can you adjust Z26 to load roms to full screen automatically? I get the roms loaded to about 3/4ths screen. But there is no menu or status bar that I can find with Z26 to adjust different parameters, etc. that is found with other emulators, such as custom inputs for joysticks, video, sound, etc. Does Z26 have any of these adjustment features? Where are they found? Is there a way to get an options menu to appear to adjust such things?
Also, I have a large set of roms for Atari 2600 (1700). Is there a way to unzip all the files at once? I would not want to unzip each one, one by one. I know there must be a mass-unzip process, but have never done it and wondering how to.
Thanks.