Basically nothing to add. I'd just like to say that a rig that runs your games (SH3, FS2004) doesn't need to be expensive. My old notebook crashed recently, and I got myself a new one for 550€. It's a Toshiba A300D-215, 2*2.0 GHz, 4GB RAM, 256 MB graphics card dedicated or up to I guess 1 GB, 320 GB HDD. SH4 runs (but not extraordinarily well), but SH3 runs like a charm. FS2004 has very decent frame rates with all the sliders set to max, but as flakmonkey said, just make sure you have enough ram and a decent processor (RAM + CPU speed is more important here than a fast graphics card).
In general, a lot of games don't have any issues with notebook video cards. Most of them are desktop versions that have been toned down in order to reduce energy consumption and / or heat emission, but I guess the graphics processor is mostly the same.
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