BiggggUnnnns

I know I purchased a bunch of the spiderweb games(some multiple times) and have lost them. The only two I have on cd are Avernum 3, and Geneforge 2. I want to play the early Avernums and am not sure if I purchased them. Is there a way to check if I purchased Avernum and Avernum 2 in the past and send me registration codes if I download the demos?

I accidentally pressed a button disabling the editor on Avernum 3 and it claimed I could find out how to enable it on the website but I cannot find it anywhere.. Can you help me out?