Hmm, yes as said above a standard laptop will struggle to run FS2004 with any settings other than at the low end of the sliders. A quick Google found this below which may be quite decent (look at the price though). I'm not sure if I'm allowed to put in a link to the site with the prune advertising rules. Try the search "gaming laptop" in google.co.uk and go to the first of the sponsored links at the top.
Intel® Pentium M (2.26GHz)
Microsoft® Windows® XP Home
1Gb DDR2 533 RAM
17” WSXGA+ X-Glass TFT
256MB nVidia G0 7800 GTX or
ATI Mobility Radeon X800XT PE
Graphics
100Gb (7200 rpm) HDD
8 x Dual Layer DVD (-/+) Writer
Gigabit LAN & Bluetooth
Microsoft® Works 8
BullGuard Antivirus
Carry Case
+ 3yrs Collect & Return Warranty!
£1761.33 Incl VAT