Someone I know wants some help getting 'up to date' on their Mac. The system they're currently using is a PM 7300. They do desktop publishing (Photoshop, Illustrater, PageMaker) and want to start using Mac OS X. Should they: a) Upgrade to an 800mhz G4, buy more Ram, new hard drive, video card, etc. for around $900 - $1000 or b) buy a 'new' dual processor 867mhz for around $1600 - $1700.