Looking for some assistance here.

I have a Compaq laptop for which I purchased a Telecom T Stick to allow us to access the internet etc while away from home.

Worked fine for the first couple of weeks  but has been giving me grief ever since.  The T Stick connects fine but I cannot access the internet using any of the browsers - Chrome, IE or Opera that I have installed.  Just tells me that there is no internet access.

The laptop can still connect to my wireless LAN at hone without any problems so it doesnt appear to be related to that.  

It may be relevant that this was working while I had Norton Internet Security installed on the laptop but fell over once the trial period had expired.  I have since uninstalled Norton completely as I plan to use another product, if I ever get this working again that is.

I'm really suspecting that it will be something in the Windows Firewall settings that is preventing this but ZI cannot for the life of me figure out what it might be.

Any ideas will be gratefully received