i am having broadband connection and is unable to connect on fedora 10. what i am trying is that changing VPN settings but not successful.

First, you'll have to provide actual details, before anyone can help you, and ask a clear question. Is the problem with a broadband connection, VPN setup, or general Internet connection? And just saying "but not successful". tells us nothing. Provide error message(s), what you're doing to get them, and what you've done/tried.

Also, Fedora 10 is VERY old...the latest is 15, with 16 out shortly. I'd strongly suggest doing a clean install of the latest version, as it may solve your problems, due to the many updates you're missing right now.