I've seen where a lot of people have been having problems with Vista and SSC.. I just wanted to add that when I got my new computer and found out it had Vista on it, I was not happy.. When I went to load SSC, I was surprised to find I couldn't enter any zones either because it couldn't create that file.. I found out that I didn't have permission, if you will, to write to the hard disk.. But I discovered, that if you open My Computer, And right click on C:.. Then click on Properties and go to your Security tab.. As long as you have admin on your computer, set Authenticated Users to be able to write, I set mine to Full cause I'm the only one who uses it, and click Apply.. Then try going into your Zone.. This has fixed every persons unable to create problem that I've come across... Reading that he just re-downloaded the client to get it to work, was also helpful.. Just thought I'd add this to help others who have been on XP an now have Vista and it won't work.. <_< Hope this helps those who couldn't fix it with a new client download..