may i suggest a stroll thru the hcl
http://www.linuxquestions.org/hcl/index.php?cat=23
have a look at the cards listed there, the ones w/a ton of reviews saying things like "works flawlessly" would be your best bets.
good luck.
<edit>just for grins, if you'd post the presario model #, or the output of /sbin/lspci -v, i'd be willing to do some "legwork" to get you going. (i just love a challenge)

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