Remotely install printer via SMB/RPC/WMI?

I'm currently writing an ASP Website to install printers remotely on
clients. I'm using WMI with authentication to achieve this. Works great
so far, as long RPC is not blocked by any firewall.

I figured there could be other ways to do this. Browsing to
'\\clientcomputername\Printers and Faxes' and clicking on the 'Add
Printer' button works fine even if RPC is blocked.

Now my question is, how is the printer installed, if I do it that way?
Are these just SMB connections? Which services are required? I could
not find an article describing this feature. Is there a way to script
this? I'd be thankful for any information.

greets, Mik

P.S.: I'm not sure if that's the right group to post this