>>>No. If anything you should see a small increase in speed because the OS will be using both cores.
>>>
>>>>Using VFP, if I upgrade to a dual core system, will the execution speed of my VFP apps slow down because VFP only uses one side of the dual core system?
>>
>>Thank you , young fellow.
>
>I suppose the next question to ask is: Does SQL Server take advange of 64 bit dual core processors?

I guess not if you're running a 32-bit OS.