I lost all my data for all my games. Where is the best place to find downloadable save files? Do I need a guide for how to apply them? Thanks.

Thanks. Could you (or somebody else) tell me how far I was? I remember going into some guy's house (cabin maybe) and watching a movie about aliens, and there was a grid-based colour puzzle in there. I think that was the last thing I did.
Edit: Actually, I remember the last thing I did was looking at a newspaper which said that Bruce Willis was starring in Die Hard 17, and Waterworld finally broke even.

I can't place that newspaper, but the alien movie and grid colored puzzle sounds like David Wright's cabin, and that can be either day 2 or 3 i think.

My copy of Tex Murphy: THe Pandora Directive won't load a message comes up it says setup files are corrapted. Please download a new copy of this. How do I get a new copy of this game. I bought it from you. I will be affraid to order more games if I don't get an answer about this game.

That message just means that something went wrong with the download and that you have to download your files again from your 'My Account' page.
How did you download the game ? Did you use your internet browser or gog's downloader ?
If you used your internet browser, keep in mind that you have to download all 3 game files to the same folder otherwise you won't be able to install the game.
The 3 files you have to download (if you're using your browser) are:
setup_pandora_directive.exe
setup_pandora_directive-1.bin
setup_pandora_directive-2.bin
If you're using the downloader it will automatically download all 3 files.
Anyway, there are two availabe methods to download your files (browser or gog's downloader). If you're having problems with one of them give the other one a try.