Hey there Sckitty, I tend to agree with the other guys here when they say about loads of memory for graphics work. You should be looking at a minimum of 1GB, and up to 3GB. Just make sure it is branded by one of the major companies such as Corsair, Crucial, OCZ etc and not generic RAM.
As for the hard disks, the Raptors are fantastic for gaming and quick load times if you really need the speed, but as mentioned they are very expensive compared to equivalent SATA 7,200 drives, for loading your large graphics files they wil probabally save you a second or two.