Question : Problem: notebook upgrades

hi, i just got an acer aspire 3680 laptop.

i was wondering in general what parts of a laptop are upgradable. i have upgraded the RAM, and would like to know what else i can upgrade??
in particular: i wanted to upgrade the audio and video card, the CPU, i'm pretty sure you can't upgrade the internal hard drive, but i don't really need to do that anyway...
also, is it possible to get a firewire port installed? and is it possible to exchange the DVD drive i have with a DVD burner?

i don't want external hardware, but would just like to know which of the internal parts can be replaced with better ones.

thanks

Answer : Problem: notebook upgrades

The video card is built in and not upgradeable. For the sound card you would have to get a pcmcia card like this one http://us.creative.com/products/product.asp?product=10769&category=1. The cpu can be upgraded if you're comfortable dissesembling the system, the fastest cpu Acer shipped is a Celeron M 430 (1.73Ghz) http://www.newegg.com/Product/Product.aspx?Item=N82E16819111257 (cpu upgrade will void manufacture warranty). The hard drive can be upgraded to a 160Gb and the dvd drive can be upgraded to a dvdrw according to acer's site.