Broadband sat nav for bikes

[noswad]

I've recently signed up for an 8Mb broadband connection for my home through [http://www.lasmit.com] but have been told there is a broadband ISP that offers a service for both home and mobile connections within the same account. Does anyone know which ISP this is? Please do let me know if you know which company offers this. I'd like to buy some real time navigation kit for my mountain bike. Do you have any experience of broadband sat nav for bikes?

Thanks,
Steve