Before I start I will tell you that my flash drive works on windows XP computers, however I have not tried on other Windows 7 computers.
I used WinToFlash program to format my 8 gb PNY Attache flash drive to install windows 7. Windows 7 installed without a problem, but now the Flash Drive is not being recognized, but it works perfectly find on my others computers that have windows XP.
As of now the flash drive partition style is Master Boot Record if that means anything.