hi .. u can connect remotely to his registry via remote registry and check the following locations in his registry
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Print\Providers\LanMan Print Services\Servers\"your server"\Printers\your printer
HKEY_USERS\"SSID of user""S-1-5-21"""\Printers\Connections\,,your printer
HKEY_USERS\"SSID of user""\Printers\Settings
HKEY_USERS\"SSID of user"\Software\Microsoft\Windows NT\CurrentVersion\Devices
HKEY_USERS\SSID of user"\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts
The remote registry service must be enabled on his system