>Where can i find a commercial license for FPD26 (i want to sale an executable), but there are only VFP6 licenses.

I have a faq on this subject. You can get the details from Microsoft at
http://msdn.microsoft.com/vfoxpro/prodinfo/previous/downgrade.asp

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Type "foxpro 2.6" into a search engine and you will find a few sites selling

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Auction sites like www.ebay.com usually have a copy or two.