Where is the printer? Do you have the driver (in windows kit)?

you can try:
x=CREATEOBJECT('WScript.Network')
x.AddWindowsPrinterConnection(details) ;
for details check:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/script56/html/wsmthaddwindowsprinterconnection.asp

Bye

Valentin