Newbie:How can I make IMP working?

[Jayasankar G Nair]

Dear All,
      I 'm a very new customer of IMP web basedmailing.I needed to install
IMP mailing system in my Redhat Linux 6.1 machine.I have installed the
packages ..
1.Apache-1.3-14-2.6.2
2.mod-php3-3.0.15-1
3.horde-core-1.0.10-1   and
4.imp-2.0.4-1
  Now I'm sitting blank I dont know what to do...:-(.As per the IMP
installation guide I have changed the 
php3.ini,
httpd.conf and 
srm.conf  files.
But nothing seems to be working except that I get a test page(apache's) 
when I type the address of the machine in the url space.

When I type http://<ip address of the m/c>/usr/horde/setup.php3
after executing the command 
%sh ./install.sh  
nothing is getting...

Can you please help me out or suggest some good reading to get out of this
fix!!!
Please help...
thanks in advance..
Jayasankar