spv m600

[Guest nyny1]

hi brand new to this,hope i got location right.here goes,my device is a spv m600 two wks old,at home i have wanadoo broadband wifi paired my device ie changed authentication,data encryption entered ip adress changed default gateway etc,etc.for the first week the handset and the box worked together perfectly,now the last 48hrs nothing on wifi but only on wifi,it connects after 30/40 secs(it used to be instant) then when you try to go to a web page it tells me that the adress is not right,on gprs it works perfect the exact same adress loads up.go figure, any help greatly recieved