PS3 Wireless Connection - Cannot Obtain IP - DNS Error

[#1]

ok, so i connected my PS3 to my router WAG54GS - No problem!
then suddenly out the blue, it wouldnt connect...
so i accidently reset my Router..
and now..it still wont connect
Wired - it works perfectly
Wireless - when i set it to scan and find IP/DNS automatically it fails saying "cannot Obtain IP address"
Wireless - when i set the IP/DNS manually it says IP - Succeeded but has DNS error
is there a secret DNS i should be using instead of the 212....... ?

[#2]

ok solved.. upgraded router firmware..
0.60 to 0.8, 0.8 to 1.0, 1.0 to 1.1 ...