I am looking to buy an Apple IIGS. I have found one that appears to be in very good condition, but the display says 512K. Am I correct to assume this will be a ROM 01 with an extra 256K added? If so, is it a problem to add memory to it? If it is, how usefully is it with 256K and are the any other major drawbacks to a ROM 01 machine? Thanks in advance, Doug S. (dougs @inlink.com)