Can’t change mapped network drive

Our network is Novell 3.12. On a workstation with the newest Novell client, I am unable to change the mapping of a network drive and have it stick when I log off of the network and log on again. I want to change the F: drive from \\paycen\sys\login to \\paycen\sys. I make the appropriate changes, making sure to check to “always map this drive when you start Windows.” After I re-map the drive, it appears properly and functions properly. However, whenever I log off of the network and log on again, it reverts to \\paycen\sys\login. How can I permanently change it?