You don't need to connect to the internet, for FTA, Free To Air, satellite channels, and there are only a few freesat channels, that require a card, or line.
Can you please supply more information:
Are you using the inbuilt WiFi, and trying to connect to your router using the routers WiFi password?
If so does it recognize your router, when scanning for wireless connections?
Have you tried connecting using an ethernet cable?
Have you double checked that your password is correct, and that you've selected the correct network?