there is no officially supported way of doing this other than manually creating the Folder Pairs on the new account.
I am not advising or recommending anyone do this, but just thinking out loud that if you wanted to copy...
on Vista the path is:
%LOCALAPPDATA%\Microsoft\SyncToy\2.0\SyncToyDirPairs.bin
on XP the path is:
%UserProfile%\Local Settings\Application Data\Microsoft\SyncToy\2.0\SyncToyDirPairs.bin
to the new account (which you might have to manually create the \Microsoft\SyncToy\2.0 directory if you have not already installed SyncToy)
it might save you some time recreating Folder Pairs. user assumes all risk.
thanks
Willie