I got this to work in Windows 7 (and the same thing probably goes for Vista):
I followed the instruction from the first post by by Lapin, but still got the annoying dialog:
Open File - Security Warning
The publisher could not be verified. Are you sure you want to run this software?
Publisher: Unkown Publisher
After following the instructions from the first post there is one more thing you need to do:
* Go back to the Internet Explorer settings (Run INETCPL.CPL).
* Go to the Security tab.
* Click on Custom Level...
* Find Launching applications and unsafe files (under Miscellaneous) and set it from Prompt to Enable
* Press OK on all windows to close them (might need to restart IE if it's running).
* You should now be freed from the annoying warnings, go out and party!
It still amazes me IE settings influence a NAS like this