>list file and put the names together, separated by spaces, into the DynaZip >system variables, which I suppose would hold a maximum of 256 characters. >If you had a really large specification in your list file, I suppose your >code would have to compress in two goes. In PkZip 2.04 the limit for the text file was 8K, which could suit anyone's needs. So, until further notice, I'll just use WinExec() and use good ol' PKZip for DOS - it does exactly what I need, and I don't have to click around.