What Laptop Should I Buy And How?

Alright guys. I am a soon-to-be college student and I need a laptop. Currently I only have a four year old Macbook and an older Compaq Presario that has an assortment of crappy aftermarket parts in it.

Since I'm soon going to be in college, I am soon going to have no money. So this is somewhat on a budget. However I want a laptop that can play modern games well. Like Skyrim at medium-hugh settings and so on. I'd also like it to be mildly future-proof which I know is kind of tough. However, I was looking at a few MSIs a while back and they had bottom panels you could remove to replace RAM, HDs, and I think the CPU and GPU. Unfortunately, I'm not sure which MSI models those were and I can't find them anymore. Regardless, I need good suggestions. And a good source to buy from. I'm not necessarily picky. I'll go with anything as long as it is good, worth my money, and will perform well.

Thanks a lot,
-Garrett