Here is the exercise. I want to predict the value of my iMac on August 7th based on two different assumptions. One, the iMac is not updated at WWDC. Two, iMacs are updated with Core Duo 2's and nothing else changes. Both assume that Mac Pros are released as reported. The vitals of my iMac are: 20" 2GHz Core Duo 2GB RAM (by Apple) 500GB HD 128MB VRAM All the other standard stuff (remote, keyboard, mouse, etc) Oh, and the machine was purchased as a refurb from Apple. I know that knocks the resell value down a bit. So, what is this machine going to be worth on August 7th if the iMacs are not updated and whats it worth if they are. Thanks for your help.