I wonder if anyone can suggest a way forward, as Im really struggling:

Ive an imac, connected wirelessly through a BT Home Hub. MY wireless network also has on it an Airport Express and a wireless link to a Canon MP620 printer. I also use the remote app on my iphone to control the airport and airtunes.

Until recently everything worked perfectly. But 3 days ago, the airport express, printer and remote app all stopped. Ive tried reinstalls and resetting the BT Hub but to no avail. I sort of assumed it was the hub at fault, but the thing is Im connected wirelessly thru broadband to the web on the imac still. So while the express, remote and printer are all dead, the wireless net connection thru the hub works perfectly.

Can anyone suggest something that I can try?

Thanks in advance!