Hi
I have just downloaded and paid for the full version. You should have received a confirmation email receipt in which there is a key code. Open up AutoCollage 08 click on Options in the Action pane on the right hand side and you have three options
Output, Input and registration. Click on Registration and copy and paste the key code from the confirmation email receipt you received and click OK. Once it shows that it's registered on the registration tab I don't think you will have a problem.
If you have deleted your confirmation email, you maybe able to find under your Account and purchase. I did note that on the information about the trial version that there is a water mark on every picture. I haven't noticed any watermarks on the
collage I have just tried.
Hope this helps
Anne