My main hard drive is relatively small, so I installed FS9 on an external Hard Drive (j:/). FS9 still stores flight plan files in the "Documents and Settings" folder on my Main Hard Drive (c:/). Is there a way to change the location where FS9 stores the flight plan files to my external hard drive?

I don't know of a way to move only the 'Flight Simulator Files' folder. But you could move your whole 'My Documents' folder. That will move the FS folder as well.See this for instructions: http://support.microsoft.com/kb/310147Hope it helps,