Its possible to have several copies of Executor for different versions. Heres the trick: Put it in a directory like C:\EXEC\1.2\EXECUTOR then another in C:\EXEC\1.3\EXECUTOR a simple SUBST B: C:\EXEC\1.3 would work, then you can run it from the fake B: drive. Thats what I do for the old B&W 1.2 and the new color ones.