Does anyone know what changes I might need to make to allow restricted users to print using a printer configured for spooling?

My Windows XP SP3 system currently requires me to use an Admin account for printing if the print is configured to spool documents before printing. If the printer is configured for direct printing it works for all accounts. This used to work and some months back it just stopped, and I can't pin down why.

The printer itself is configured for all uses to have complete authority.

My system is locked down for restricted users given them only read authority to the entire file system except their data directories, which is how I have run my systems for years.

I assume there may be a directory somewhere that I need to allow users to write to.