Allow Users to Install Printers with Group Policy

This can be set in group policy either in local policy or via domain GPO, you can locate the policy at,

Computer Configuration > Policies > Windows Settings > Security Settings > Local Policies > Security Options > Devices: Prevent users from installing printer drivers
.... set to: DISABLED

Then per user command (to add printer C3002) - LOGON script:

rundll32 printui.dll,PrintUIEntry /in /n "\\pc30\C3002"

To make printer C3002 default:

RUNDLL32 PRINTUI.DLL,PrintUIEntry /y /n "\\pc30\C3002"

Command Line Printer Control >>> www

Networking Printers & Windows 2008 Server >>> www