I play HWLG on my desktop and in an old (4 years old) ASUS laptop with an ATI x700 128 mb graphics gard (but 2 Gig RAM). It plays well
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Nevertheless, if you are buying a laptop there are a few things to consider. I am also thinking of buying one but have not yet got the permission from the Treasury Sec...I mean wife
you should think: How much you want to spend vs for what you want the laptop ?.
To play HWLG I would say that pretty much any 500€ laptop would do. But if you are just a bit serious about gaming, you must have a dedicated graphics card (not Intel) and at least 2 Gig RAM. Also you should think about weight and battery time: is it going to be a "desktop" replacement or a truly portable PC ?
At the moment I am considering an ASUS N71JQ - 4 Gig RAM, ATI 5730 1Gig graphic card, good price (aroung 1100-1200 euros). A bit heavy, nevertheless.
Regards