PS3 on network

Hi,

I just bought an PS3 and I would like to put on my network home. I have plug the cable to my router and on the back of my PS3. I follow steps to make enable the share but the PS3 system doesnt show up as an Unknown Device in Media Player, under Windows Vista.

I've made some tests.... when I browse in the PS3 browser explorer, I can see and I have access inside me router with the IP adress and vice versa.

I make also a ping and everything are OK, I can see the PS3 and my PC and me PS3 see my computer.

PS3 Media Server is enabled.

Now, what to do ?

Thank you