My offline cache for Exchange is currently set to C:\Documents and
Settings\User\Local Settings\Application Data\Microsoft\Outlook\outlook.ost.

I don't have a lot of room on C: though and want to relocate the offline
folder, but when I go to the Offline Folder Settings part of the Exchange
Server properties, the location of the offline folder is greyed out and there
doesn't seem to be anywhere I can change it.

Any suggestions?