Sounds like you might have the exact same laptop I have Miden ( mine is a Toshiba Satellite btw ). The only difference in specs is that I added another gig of Ram to mine. I also have a Usb Audio Interface hooked up to it with 4 ins , 4 outs, and midi in / out ports.

To date I've run everything I've wanted to in it, meaning seperate sofstynths for each style part in OMB or seperate softsynths / samplesets for each sound while recording tunes in FL Studio, without any hiccups, crashes, or latency issues. In comparison, I'd crash out my old P4 laptop ( 2.8 gig processor ), using half of what I can use on this machine.

My favorite module for Electic Guitar sounds is Plugsound's Fretted. Real nice Strat and Les Paul sounds. Not a ton of distortion there though, but I can take care of that by sending the signal through NI's Guitar Rig. I also use Slayer 2, and while some of the cleaner sounds aren't exactly realistic all the time, you can get a real modern "grunge" power chord sound that I can't find on anything else.

AJ