>My bad.
>
>If I have 4 million records and need to perform record level updates, could it make sense to split the file(s) and have mulitple instances of VFP (or a VFP App)perform the operation(s) on a multi-proccesor machine? Is there a possible performance gain?

Yes. As long as multiple threads or processes are involved you'll see a benefit of multiple processors. A single standalone VFP app however will not see any great gains. VFP internally uses threads for some database operations (mostly the cursor engine), but they are not worth the investment in a second processor.

You can get advantages out of running multiple app instances or running multiple instances of a multi-threaded client like IIS.