Well, my trying to do this with crossover tools slowed me down... I got a copy of Info-zip command line zip and used it as: FOR /D %%G IN (\*.*) DO D:\bin-test\zip\zip -r -S "k:\gz3%%G.zip" "d:%%G\*.*" and it seems to have worked. The registries didn't copy while in use, as expected, but are there any diff tools that will read the inside of a zip and compare with the real file (and can be run from the command line)? It could be done as an unzip-compare operation but I'd prefer to not require so much disk space... I know there is a 'test' option, but I want to make sure, independently, that it got every file, not just that what it decided to get worked. BTW, 7zip portable and winzip open them fine, but peazip doesn't. Thanks, -Skip -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist