MOBILE WORK STATION

I need some recomendations on a mobile work station, aka a"really nice Lappy"
I do mostly mold design and I may eventually need to run Mold Flowor Cosmos but for now just SW.
I will set the bar at \$3-4K.
I need at least 4 gig ram and I guess I am hearing 64-Vista is theway to go, so thats settled.
I want the largest screen I can get and I dont care about weight orsize.
I guess my real question is graphics card I have no idea what tolook for and what is available for lap tops.
I keep hearing and leaning towards DEll but I am wondering ifanyone has other suggestions (XI possibly?)
SolidworksAdministration