I had windows vista 32 bit earlier. Then I got windows 7 professional upgrade in trial period. I didn't notice how it happened. Of course it must be my mistake. Now when i boot from windows 7 it shows 64 bit and in vista it shows 32 bit. The system asks before booting which one to choose. It's today only that I have installed but I am not facing any problem as such except that i need a product key within 30 days. Should i leave as it is or uninstall vista somehow. Would i be able to reboot my system using the 32 bit vista CD? I am completely confused.