Windows 7: Windows 7 Home Premium 64-bit UPGRADE issue

i am in the works on my new rig and my dumba-- bought windows upgrade without knowing it and tried to install it on my new hard drive so i was wondering since it needs vista to upgrade from is it possible to place my old hard drive from my vista computer and place it on my new motherboard and install the upgrade disk or am i going to have to buy the OEM?

If your new motherboard supports the old drive, you should be able to put it in. You will most likely need to boot up fully into Vista and let it find the new drivers for the motherboard first, or download and install them yourself. It's been awhile since I've swapped HDDs from mobo to mobo, but I am pretty sure you will need your chipset driver for your new motherboard..maybe get all of your peripheral drivers ready just in case..

Take look at this tutorial:
Clean Install with a Upgrade Windows 7 Version