I’m trying to work through the code but my XP system seems to have a problem with the following code in callouts B & D in Listing 1:

>nul & if not errorlevel 1

The program stops at these points with a syntax error. I can’t seem to figure out what is going on here. Any advice?

That is an effect of the way the code is displayed in the listing. That line you posted and the line after it needs to be concatenated instead of broken up. I tested it with Windows XP and it worked fine after that change was made.--James Adair