Maximum PC

Hello, I'm building a computer and to go along with it, I'm looking to buy a (hopefully) small, lightweight laptop to go along with it to bring with me to classes and other places when I cant bring my desktop computer. I dont want to spend too much money on it, but I would like to at least play SC2 on it, graphics settings dont really matter, it could be lowest, and at the price I'm looking to pay, thats all it will really be able to play at, but that's fine, I just want decent framerates (30-40ish). The price I'm looking to pay is under $600. I'm hoping that the laptop is on the smaller, more portable side, but at my budget, I cant be too picky.

If my budget constraints make what I'm looking for impossible to fulfil, then then next thing I would look for is just a cheap lightweight laoptop/netbook that can play hd (720) video.

That's tough. If you go on Newegg and just pick the filter "Dedicated Graphics" (which is what you need for it to be any sort of gaming machine), and look at the lowest priced laptop it is right at $600. I got mine for $550 but it was a Black Friday sale, so you can try shopping around for a sale. You can get something like this, which has a pretty decent graphics card if you're willing to spend a little extra. That one is almost the equivalent of mine (I can play L4D at pretty decent settings) except it has a better processor.

Sounds good, I guess I'll just keep my eyes peeled for any good deals. Thanks!