Windows 7: Upnp

How can i enable upnp in windows 7? i like to pair my ps3 with my media server program which i just downloaded but i need to enable upnp, the only tutorial i found was this one Turn On and Enable UPnP or Network Discovery in Windows Vista » My Digital Life
but that doesn't work for 7.
Any suggestions?

,Wiisper

The "Network Discovery" setting is in the "Change advanced sharing settings" in "Network and Sharing Center". Access it from Control Panel or from the Network icon bottom right of the taskbar.

This utility: "DisableUPNP.exe" available from GRC.com is designed to turn UPNP off for those of us who don't need it, however you can also turn UPNP on using the utility. I just checked it out on my system.