Windows 7 - Disable search for driver software history

Hi All

I am trying to turn off "search for driver software in this location" history I have search on the internet but cant seem to find the solution.

It keeps on leaving the location of where the driver is which is at external location that might change form time to time.

You get to this location by going to device manager - pick the device you want to update - driver tab - update driver - browse my computer for driver software - and in the drop down box you have the history of the location of the drivers location history which I do not want.

I know where to delete the history that reside in the registry at HKEY_LOCAL_MACHINE - SOFTWARE - Microsoft - Windows - CurrentVersion - Setup - and Installation Source string is where you can delete the history

Can someone please help me out here. Your help would be much appreciated.

Thank you