Limited or No Connection

Hi,

I am trying to connect my Laptop (internal wireless card) to my xtra wireless broadband kit (DSL-G604T).

My Laptop is telling me that the signal streght is really good but the status is saying that I have a limited or no connection which is preventing me from using the internet.

I am Running Windows XP SP2 on my Laptop.

Can anybody tell me how I can get this connection working

Thanks in advance