Michael,
An issue to worry about is incompatible FOXUSER files, there are 3 different ones between FPD, VFP3 and VFP5/6. So it's hard to have different versions running out of the same directory.
>I have several FoxPro databases to maintain. These systems are written in FPD 2.6, VFP3.0, & VFP5.0. Is it possible to maintain all with VFP5.0 or 6.0 and not upgrade, or will I need to locate copies of all the different versions of the software? The customer is the US Navy, and is usually leary to upgrade when a system is working.