Ok, please tell me how to install a package without the dpkg system

["Benj" <koros@club-internet.fr>]

Hi,
don't ask me why, but I can't use anymore anything related to the dpkg /
apt-get system.

I will have to install everything I want manually from the source :/
So please tell me how, since I really have no clue how to do it. Here is an
example of What I want to do.

I have php4 package installed (It was installed with the apt-get... when it
used to work).
Now I want to upgrade this php4 package to the latest package (php4 4.03
pl5).

I downloaded tar.gz source. Now, what am I supposed to do.
Step by step instruction welcome.

Thanks a lot.

Benj