Your card should be OK for modelling, but in models with lots of geometry in shaded mode and depending on the quality settings, textures and stuff it will probably lag.

As for games, it should run WoW (think the min. requirements is a 32 MB NVIDIA RIVA TNT2), but I don't know about the others.

Just out of curiosity, isn't the GeForce Go for laptops or is my knowledge of computers a bit outdated?