Making Direct URL in Pages header

Dear,
I want to make a URL in my pages. let me clear whole story:

I have a blog page, which few pages at top side by side (i.e page1, page2, page3 etc) and some category at left side bar, top to down. I want to use one of my pages (i.e page3) to be redirected to another website of mine. currently i am clicking on the page and taking the URL from the body of the page. But want that, when I click on the page it will take me to another site.

Can anybody plz help me?

/touhid