For one, I'm aware that no one here seems to recommend Tiger Direct; they earned a bad reputation some years back for some shady practices if I remember right. Someone else might be able to provide more info. (Put the word "Tiger Direct" in your title, and you'll probably get a slew of replies about that.)
The IGP 340M, even with access to 64MB of my 512MB PC2100 cache in the laptop, it still didn't perform quite as well as a Geforce2 Go 16MB (dedicated RAM) did in a similarly configured Dell laptop. Modern GPU's (Geforce and above) really thrive on fast RAM, and a shared-RAM solution, like the IGP 340M, just can't seem to provide enough bandwidth to give the GPU the fast stream of data that it needs.
That said, it probably won't perform horribly - games like Half Life will do fine on it at the laptop's native resolution. Just don't look for anything like anisotrophic filtering or antialiasing, unless you want a really nice slideshow - those things ratchet up the memory usage, FSAA especially, and that's already limited as is.