I have canon canoscan attached to my system which running with windows 7. The problem is I couldn’t be able to find the perfect twain driver for CanoScan D1250U2F with windows 7. Without these drivers I am unable to use the canoscan. If anybody have installed or find it before please tell. Where exactly can i find those twain drivers? Do not give me the advice of other operating system drivers such as xp and vista. I want it for my windows 7 only.