Safe to play without T and L capable video card if required?

So i just got this nice little HP mini 110 netbook and i have a copy of the sims 2 double deluxe game. It's able to run just fine as long as i only play the base game if i go unto the nightlife expansion it's a bit laggy. systemrequirements labs says that my netbook cannot run the game because it requires a T & L capable graphics card. My question is, would it harm my netbook in any way to play the game without the T & L graphics card? And also why would it say i cannot run it if i can? My netbook has a intel atom N455 Processor (1.66 Ghz), 320 gb hard drive, intel graphics accelerator 3150 with shared graphics memory.

I f someone could please answer me, im so hooked on sims 2 but don,t want to ruin my pc playing it
 
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