upgrade or work

I need to upgrade my computer system if I am to do more stuff from this office, but that takes money, so maybe I should concentrate on getting a job. I have left upgrading my resume for last, perhaps that is what I should have worked on the MacBook Pro, after all I had no other information on it last weekend, but alas I decided to play with it and learn about Leopard, the first chance I had to use it outside the Apple store. As I said before, it is a really nice OS. But still what is the cost/benefit of getting an Apple, or should I simply get a motherboard with lots of RAM from Fry's and stick it in one of the many cases I have here. That would be a 10th of the price.