Windows xp and iexplorer

I got windows xp, I type everything I needed for my local isp, old one, had to type both dns numbers in and click on add terminal, so when I log on it brings up the terminal for me to type in user and password. And I get on my isp. it goes in the lower taskbar. But I can’t browse cause it times out, or can’t find the page. I click all the boxes in the advanced ie, for security. it is 128 bit. this is a fast computer and windows xp. I want to log on to the internet not just the local server. Can anyone help me????