php postgres install problem

i am developing a web based application on slack and slack has php already installed on it.. but not with postgres support.. so i downloaded the php4 package and configured with ./configure --with-pgsql make make install option (because this is what most of the documentation suggested).. but postgres is still not working with php and i checked in phpinfo() but i could not find --with-pgsql there.. this means that php did not get configured with pgsql.. now is that because php was already installed on the system and i needed to remove the old distribution and install php --with-pgsql again?? i think there should be a way out.. what is the methodology to make php postgres compatible in my case?? pls help!! regards vishesh ================================================================ 1.Complex problems have simple, easy to understand wrong answers. 2.Behind every successful woman, is a man who is surprised. 3.Alcohol doesn't solve any problems, but then again, neither does milk. 4.I'm not a complete idiot, there're still some parts missing! 5.The number of people watching you is directly proportional to the stupidity of your action.