How to reformat flash drive

I finished installing ATV Flash on my ATV. Now I want to reformat my flash drive back to normal but my Windows doesn’t recognized the usb drive. How can I get it recognized in Windows again?
Thanks,…Andrew
Windows Vista

http://wiki.atvflash.com/index.php?title=Troubleshooting#My_Flash_Drive_No_Longer_Works_After_Installing_aTV_Flash

Thanks Guardianmax! That worked!