Wireless Networks

A client has a small office in thier home but spanning over 3 rooms and 2 floors. We are thinking of networking it using wireless as they don’t want wires running in the home and we don’t like the thought of climbing and drill into brick to run it outside.A DSL line will then be attached to the whole network.

Does anyone have experience with wireless and know what the issues are we should be looking at. Any experience with specific vendors?

Thanks

Lynda