thanx for replying guys it said it was connected to his 02 broadband in his house so i thought that would mean his wireless was on but i'll check tomorrow and it said it was connected to 3 on my dongle in my house and it still wouldnt connect and find the net ??
It can still show connected if the Network key was changed at the router.
Ok re-read the first post.
It could be a firewall setting, as some Fire wall software actually will block an application if you don't give an accept or reject with in 50 seconds (web root). He could have also installed a second Firewall software so there fighting each other and no one will win and no connection. Look in the add removed programs if there isnt a icon on the desk top with something obvious.
Flushing the DNS as Ex0 recommends isnt going to hurt.
It will flush the DNS on your dads laptop only.
Final point is that a Reboot after all the changes can help things settle down.
Please list the Operating system and any extra internet security programs.
If its a Dongle, just try plugging it into a different USB on the laptop that could re-install the drivers and you may just catch that firewall prompt.
Hope that may help.