I've just setup a WAG354G wireless router for my Bulldog (UK) ISP.

However I am having a problem connecting to the internet via the wireless connection. If I plug ethernet into the router its fine - everything works as it should (hence I'm able to type this!).

However when I switch to wireless I'm unable to get to external sites - I can however get to the router itself. In that I have the LAN running (can ping internal 192.168.x.x addresses) but I can't get to anything outside/onto the internet.

The real problem is that I've had it working once (last night) but when I switched users to check my girlfriends login was o.k. it wouldn't work. Then I switched back to my own profile and it had stopped working.

As I was having problems with the WEP encryption I disabled this and limited access with MAC address instead. I've now disabled this (hoping my neighbours haven't noticed!) so my router is wide open.

Router : WAG354g
Firmware : 1.01.03, May 16 2005
DHCP is disabled.

apart from removing all the security features nothing is different to the way it was last night?

I'm stuck and I know this one isn't obvious but any ideas appreciated. Cheers.