installing minimal Debian Squeeze

Hi all.

OK, I am installing minimal Debian Squeeze to my Hyper-V VM.
It's now prompting for 'Software Selection'

Desktop
web server
print server
sql database
dns server
file server
mail server
SSH
laptop
Standard system utils

I know we do not want the desktop but do we need any of the others?
mail server? web server?
Standard system utils - is checked by default

thanks

I am following the instructions at http://viewtopic.php?f=12&t=2140

echo "deb http://packages.openmediavault.org/public sardaukar main" > /etc/apt/sources.list.d/openmediavault.list
apt-get update
apt-get install openmediavault-keyring postfix
apt-get update
apt-get install openmediavault
omv-initsystem

After running these two commands

echo "deb http://packages.openmediavault.org/public sardaukar main" > /etc/apt/sources.list.d/openmediavault.list
apt-get update

I am getting an error at the end:

GPG Error http://packages.openmediavault.org/public sardaukar
The following signatures could not be verified because the public key is not available.

Should I ignore this? or? did I miss something?

OK, made it to:

apt-get install openmediavault

and have some dependency issues:
php5-pam But is not going to be installed
scponly But it is not installible
php5-proctitle But is not going to be installed

Help?

Both
Unable to locate package

When I type

cat /etc/apt/sources.list.d/openmediavault.list

I get

deb http://packages.openmediavault.org/public sardaukar main

apt-get update
I get

hit...

a bunch of times and then...

reading package lists. Done...

Nothing is downloaded