I was thinking either a wacom tablet + another 512 gb of ram, or upgrading the processor from 450- 1.0 ghz. either option would be around $200. currently I have 640mb ram, osx tiger. it actually runs flawlessly for regular use but I'm limited to running illustrator, or photoshop individually and when I'm altering 10mb+ files the cpu tends to get pegged pretty easily. but still gets the job done.