Re-installing apache modules on 8.04

[Hal Burgiss]

I've inherited an 8.04 LTS server installation. Its now fully updated,
but there are several apache modules missing. Like rewrite and
expires. I cannot find the correct magic words to get these back. I
have tried apt-get install --reinstall, I have tried removing all the
apache packages and then re-installing. I have tried manually removing
the mods-available directory and re-installing. Interestingly, this
provides a completely empty directory with no modules at all. The
modules I want are in apache2.2-common from what I can tell, but for
some reason apt does not want to really, really re-install. I am doing
this remotely, so I need command line type thinking. Otherwise the
system seems fine. Thx!

-- 
Hal