i have an 17" iMac (pre-intel) and planning to buy a powerbook. i am stuck with deciding on with i should get the black macbook or the 15" macbook pro. i mainly need the labtop for: - travelling - running autocad (2D only) with pc (boot camp) - lightweight stuff ... surfing email iphoto etc. any advice? would the macbook be capable to run autocad? thanks!