My parents just bout my sister a macbook for school, the 2.26ghz unibody macbook with 2 gb of ram. I've done some research which has been somewhat mixed on if the upgrade is worth it. She will mostly use it for internet, office, dvd/internet streaming, music etc. I am also planning on installing windows xp sp2 on it, but haven't decided if I will use bootcamp or one of the VMs. My understanding is that for VM 4gb is definitely necessary for acceptable performance, and also for multitasking. So would it be worth it to upgrade her new macbook to 4GB? I don't have much experience with macs so I'm unsure of the memory utilization for various processes in OSX