I have recently gotten into a bit of PC gaming, currently my main computer is a laptop with a pretty crappy GPU, I have no intention of upgrading any time soon. I have an old desktop which was my former computer, it's a few years old at this stage and doesn't really get much use. I was wondering if it would be possible to upgrade it and use it as a gaming PC. New GPU, CPU, upgrade RAM and a windows 7 license? Do it as cheaply as possible. Would this work or would I have to do more to get it up to par?