Terminal Server

I have installed terminal server on windows 2000. I unchecked the com port mapping in terminal server configuration (To allow the use of com port on the workstation)

I logon to the terminal server from winodws 98 using the terminal client. After logon, at the server, I try to add a printer, at the port selection, I cannot see the workstaion com port. I only see the worksation lpt port. Is there some settings that need to be done ?

Thank you