Try searching for the 'ahiiterr' folder. The screenshots should be in the same place. If you are not the administrator for your computer, and you are not if you did not install Vista, then Vista puts all your files in a user specific folder. It's a new feature of Vista called 'User Access Control'.
If you want all your files back where they used to be, then you would have needed to run the AH2113.EXE installer using a right-click and selecting "Run as Administrator" option.
Then after that, you would have to right-click on the Aces High II startup ICON and select "Run as Administrator" every time you wanted to run the game.
I went ahead and makde a sticky in this forum for this issue.