>>You can upgrade from Vista to Win7 but not from WinXP. You'll have to do clean install of Win7 later if you go with WinXP now.
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>I see. Thank you. I guess for the peace of mind of VFP development, I will go with WinXP still.

I'd say that the problem is not really Vista. The problem is the computer where Vista is running. I have an old laptop. 32 bits, 1.5 gig ram. I hated vista. Not that long ago. I bought a 64 bits desktop with 4 gig of ram. Lots of HD. You could'nt get me to go back to XP. VFP is humming.