my macbook has 1GB of ram and i want to replace it to 4GB. im trying to not buy it from apple. where can i go to get the right kind of ram thats for my macbook?

if i had like 2g and its full can i put an extra memory and where??
(RAM or Hard Drive Memory)

I have an Acer extensa 5230e Intel Celeron AMD x64 2 gig of RAM running windows 7 home premium. idk about the graphocs card though. I am trying to run Mac OS X 10.6.6 off of vmware but i cant do it without virtualization. How can i enable it? if possible for my computer.

I’ve been looking around on sites like newegg because I’d like to upgrade my macbook pro. I bought it about 8 months ago and it came with 2gb but it can handle 4gb (i’m pretty sure).

Do I have to get a 4gb to replace it or can I just buy 2gb to add on? And where can I get it for cheap?

Can it run MS Office? Does it have wi-fi(G or N)? What is its processor and RAM? And how does it differ from the common netbook(based on technical specs and which is better)?