I have recently received a Giga 3 version of the PMI Old Lady. Unfortunately this piano, though excellent, taxes my system beyond its abilities. I only have 1 Gig of RAM and a 1.6 GHz Processor. Unfortunately my motherboard is such that I cannot increase my memory beyond this point. My question is, how difficult is it to replace the motherboard and processor, what is involved in the process and what specific items should I get (brand name, particular unit, what works)? Thanks in advance for your help.