Wireless/WiFi Connection

I'm stumped. I only connect through Wifi at my home/office and through bluetooth on my iphone. When I am at my office everything works great in the windows XP VM and also everything works great through my iphone. But when I am at home I can connect to the internet and receive emails in outlook but I can't not send through my outlook in XP VM. I guess I should say that everything works great on the Mac side no matter where I connect.

What should I do to correct this?