You can't put a zip file in there just the folder with the dock parts in it. After you unzip the file most people will put the graphics and ini file in a folder. If not make a folder for the parts. You can always get one from my site as I package everything in a folder inside the zip. But like I said most do.

Hmmm, not sure why you are having problems gevansmd.  I run Windows 7 and here is what I do and it works everytime. 

1. Click the download button on the skins download page, you should get a window that gives you options, I always select 'Save As', it goes to a download folder.

2. Once download is complete go to the folder where you saved it.

3. Right click on the file you just saved and select 'Extract To'

4. Now go to the ObjectDock Folder, find Backgrounds and select or click it as being where you want to extract the file, besure to use folder names.

That should work unless I missed something. 

Good to hear you have it working now. 

Oh and be prepared, it would seem we all have those 'Duh!' moments around from time to time.