You'll need to explain a bit more.
If you're trying to go on-line - I presume you have an internet service? Who is it with?
Are you talking about a Wireless connection - or cabled - or a mobile dongle?
Is this for browsing the web, or email?
With a netbook - is it Windows or Linux?
Trying to help without knowing more is just guessing. And no, it doesn't mean you can never get on-line - it just means it needs to be setup for the way you want to use it.