I don't...I use a Mac for all my designing. Vista, apparently, doesn't like that.
If you get an error when you try to unzip my folders on your PC, just click okay until the messages go away. Then click on the zipped files to open them, and copy and paste the files inside to the destination folder. You can delete all the MACOSX files.
Apparently, the free program 7zip does a fantastic job of unzipping things. And then you don't need to deal with the instructions I just gave you.
If you still have trouble unzipping my files, or opening them when you've got them unzipped, just email me...what's the point of downloading my kits if you can't use them. :)