I'm a designer and recently converted to a Mac. When I bought my Mac, I downloaded the Photoshop CS3 trial from Adobe's website to hold me over until I was able to purchase CS3. 30 days later, my trial runs out, as expected. I dish out the dough and purchase CS3 Design Premium from my school and install it. However, when I went to install it, it said that Photoshop was already installed and so I installed the rest of the suite. Afterwards, I opened up the Photoshop trial to type in my key, but it said it was invalid. It was the same key that I just successfully used to install the rest of the suite. I then tried uninstalling it by deleting all Photoshop files in Finder, but I still get the same message--that it's already installed. Any ideas?