In that case, just about anything will do. I'd just go down to a local store and see what they have. Almost anything can handle web surfing and browser games.
Just stay with the major brands - HP, Dell, Asus and shop around a bit.
Here's one off newegg:
http://www.newegg.com/Product/Product.aspx?Item=N82E16834157871
There's a bunch in the 500 $ range though.
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"There is an art to flying, or rather a knack. The knack lies in learning how to throw yourself at the ground and miss. Clearly, it is this second part, the missing, that provides the difficulties." - Hitchhiker's Guide to the Galaxy