Wireless

Hi
I use Sky broadband and a laptop. I can only use outlook express when
ethernet cable connected. If I try without it gives the following error

Your server has unexpectedly terminated the connection. Possible causes for
this include server problems, network problems, or a long period of
inactivity. Account: 'pop.tools.sky.com (1)', Server: '127.0.0.1', Protocol:
POP3, Port: 110, Secure(SSL): Yes, Error Number: 0x800CCC0F

The computer and express work ok when I take it to my friends house and use
it via his wireless router. However even when OE is not working with cable
disconnected the web browser still does. Sky say it must be a fault with OE.
Can anyone help?