I have found a computer I may purchase which is close to what I would build myself with warranty and Win 7 OS installed for a decent price.

But at that price it only comes with a 5400 speed HD.

I'd like to install the OS on one of my spare 7200 speed drives for the added speed.

If I decide to get that computer,what is the easiest way to put my Win 7 OS onto the faster HD?

Will it require contacting MS to activate the new OS on the faster HD?

Thanks for any advice.
Carkins