I am a soon to be mac convert. I am just wondering if anyone knows of third party outfitters that can upgrade the graphics card in the iMac. Also, how would the imac, with the 64mb and G5 compare to the powerbooks that have 128mb if i want to do some gaming. i have read some related threads and found the infor helpful, but not as precise as i was hoping for. Finally, i read on somewhere that the new PB 15 inch may have 128mb standard graphics, and a 200$ price drop...does that seem right? How long before an upgrade to imac for a 128mb card do you suppose. thank you to whoever responds.