Well the Mobile series from Nvidia are great, iv got a Geforece 8600M (i think) in my Acer and i can play Tom Clancy's RainBox 6 Vegas 2 and TimeShift (for example) exelent
there's even the 9500M and 9650M out
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of cource, if u want to COMPARE to the desktop geforce 6100... then get the lowest geforece mobile 7 series...
but i recommended a mid-range 8 series .. i mean, surely u dont have ur laptop JUST for NL
Rarwh