A way to play high end games is via the ONLIVE game service this works quite well on even basic laptops but is nowhere near as good as a decent gaming laptop. Unfortunately you have to pay for it!:(
Sorry cant upgrade laptop graphics unless you have a high end gaming one
You can get an external video card adapter but why waste the money and even game on your laptop. Especially if you're looking for a GPU under $200. Not worth it man. Save up money and upgrade to a gaming laptop or a desktop.