You are conntected to an access point but ??

Hello,
We have free internet access at the cottage. It is provided via satellite signal. My wireless connection shows good signal ...54mbs. But when I try to connect to the signal I get the message... You are connected to a access point but the internet can not be found.
Am using Linksys adapter with speed booster and a Linksys signal booster.
Your help will greatly appreciated.

Thanks