installing pear question

hi there. been a while since i installed pear, and i am trying to do this on a pair.net account. i am following the instructions on the pear site, and using ssh to do this. when i use: lynx -source http://go-pear.org | php I get an error like this: php: Command not found. I guess I am trying to execute this from somewhere that does not know about php on the server. Any help would be appreciated. thanks, chares