As mentionned here I use Belvedere to automate files operations. Recently I tried to add a new rule but the program wouldn’t save it. After a bit of searching I realized that the directory where the RULES.INI is located was read-only. The trick is to launch Belvedere in Admin mode just to create the new rule. You can then shut it down and relaunch it in regular mode.
How to add new rules to Belvedere on Windows 7