newbie needs your guidance

[JOYDEEP]

Dear list,

I have fixed one problem. I have added the "127.0.0.1     localhost"  
in /etc/hosts file. and now after executing
 # /kolab/etc/kolab/kolab_bootstrap -b

it reports

KOLAB BOOTSTRAP
Check for running webserver on port 80
Error: Found webserver running on Port 80
Check your installation!
You must stop the service webserver before running Kolab
You may try to execute "/kolab/bin/openpkg rc all stop" initially

please note I have egw running in the same server under lampp.

kindly show me the way to run kolab here..
thanks