httpd not found

[my-webhosting]

Hi you all,
I am trying to install ISPConfig instal but the following error occurs!


########## WEB SERVER ##########

Checking for program httpd...
ERROR: httpd not found!

And there the installation stops. Apache 2 is running, :confused:
Am i missing something?

edit
Machine runs on Debian sarge 3.1 stable

[my-webhosting]

Found the solution
Reinstalled apache!