In a previous tip I showed you how to restore a file, which relies on System Restore. Vista automatically creates a restore point once a day, and also when updates and some software and drivers are installed. If you want to change the once a day to be more or less frequent, it is possible, but will require modifying your registry. I must always mention that incorrectly modifying your registry can cause problems, and could even prevent your machine from functioning all together, so BE CAREFUL!

1. Open the Start menu and type regedit in the search box.
   
2. Choose Regedit from the program list that is found. You’ll need to approve UAC if it is enabled.
   
3. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore
   
4. Doube-click RPGlobalInterval in the right pane.
   
5. Change the Base from Hexidecimal to Decimal. This will make entering a value much easier (unless you know hexidecimal, then have at!)
   
6. The default value is 86400, which is the number of seconds in 24 hours. Change this value to the number of second you would like between automatic restore points. I’ll change mine to 12 hours (43200).
   
7. Click OK, close Regedit, you’re done!