I was wondering if there was a way that I could use my old laptop HDD with Vista instead of having to go out and either pirate Windows 7 or spend $100, since I am a student I have a tight budget and just wanted to ask for some help before I went out and might have ended up wasting my money on something that I didn't need to buy.
It all depends on chipsets and drivers. You are all correct. The OS may not work all that well because some drivers would have to be different. It may even book, but will hang over time. Besides for peace-of-mind it is better to be the owner. One way that may work for you is booting into Linux and using a Virtual machine for those programs that HAVE to work in Windows. I made the switch to Ubuntu and I have never looked back. I can do everything I need to with the thousands and thousands of free applications.