de-installing unix apps

[secure NFS]

Everywhere I read, configure, make, etc. are explained - but what if I want to de-install a unix app.

Say I use apache 1.3.26 and would like to upgrade to apache 2.0.40 - what do I do?

-should I deinstall version 1.3 ? how?
-can I re-use some of my old configurations?

Any help would be much appreciated.

[howardm4]

some packages include an 'uninstall' target
in their Makefiles. Many do not.

it really boils down to figuring out where
it stashed all the files and moving them
out of the way. Usually, things are
rooted in /usr/local but a 'make -n install'
will show you what gets installed w/o
doing it.

Sometimes you can load the new version
right over the old one but that can
burn you w/ left over files, etc.