problems with XWBN5201

HI,
I'm very tired... I spent all night to combact with my lan....:(

I bought a powerline kit with XWNB5001 for improve my wifi area.

Unfortunatly I'd some problems...

Actually the situation is:

- I can connect to XWBN lan
- signal on client device is ok
- ping command works
- if try to connect with an IP address on web it's allright, for example google (64.233.167.99)
but if I use url address, for example, www.google.com doesn't WORKS.... every url is the same thing... doesn't works...

it seems like DNS don't works but dns parameter is correct. Always I check it !!
In the same mode I can't access to configuration page of XWBN...
XWBN assume an IP address but I can't navigate it;

anyone can help me please ?

ThanX in advance

Marcello