doubtful...usually the video cards are built in and the only way i know of to check is to take apart the entire thing and see for yourself...then you run into the problem of finding another graphics card for laptop that will probably be expensive...
i'd say look for pricing on a laptop GPU before you do anything else though and make sure you're willing to spend the extra cash.
Antec NeoPower 650W
Intel Core 2 Duo E8400 (w/ Arctic Freezer 7)
4GB DDR2-1000 G.Skill
Sapphire x1950 Pro 512mb (w/ V700)
250GB, 500GB and 1.5TB Seagate Barracudas (2.25TB total)
Fatal1ty XtremeGamer sound card *** generic TV tuner
Xclio 3060 case *** HannsG 22" monitor
XP Pro / Ubuntu 7.10 *** Razer Copperhead and Tarantula