Using Pear: How To?

Hi, I have 'pear' on my Ubuntu Feisty Fawn OS. I would like to install 'pecl_http'. I found it for *nix at : http://pecl.php.net/package/pecl_http (I used php_http.dll on my windows xp OS, and it worked fine, but I have no idea how to do this on Ubuntu). My question: How do I install pecl_http? I tried pear install pecl_http but it told me that pecl_http could not be found. I searched the repository, and it wasn't there. However, I know it is at the url above, and I'm a bit confused as to why pear is not aware of it. Can someone help me install this module? I'm truly a newbie, this is my first post to the forum, and I have no sense of direction on this. Thank you, Matt -- It is from the wellspring of our despair and the places that we are broken that we come to repair the world. -- Murray Waas