I just bought a student priced key for my laptop which I use to take to school. Within the next year, I am planning on building a desktop. If I buy a second key, this time a professional via The Ultimate Steal, will it last that long. I guess my question is (prolly a stupid one) do the keys ever expire?
Nope, they do not. The only way a key can become worthless is if MS decides to manually deactivate for some reason or another (illegalities). However, you are a student and purchased the key fair and square within the parameters of the deal, so you should be good to go for as long as you use W7.