Connecting a network printer via a Thecus N2100 - works in Vista, not in Windows 7

"Okay, I've sorted it out, thanks to Wireshark.

On Vista when I tried to print a test page, it posted directly to the URL.

On Windows 7, it started making SSDP requests instead. I figured this might be to do with looking up the name, so I changed to use the (statically assigned, fortunately) IP address instead of the host name... and now everything's fine."