Nagios starting problem

[Apollo]

Hi All 

While starting the nagis ,i am getting the follwoing error
Any idea where i am making mistaks..In which config i have to edit to solve the problem

Thanks


[root at apollo bin]# ./nagios ../etc/nagios.cfg

Nagios 1.0
Copyright (c) 1999-2002 Ethan Galstad (nagios at nagios.org)
Last Modified: 11-24-2002
License: GPL

Nagios 1.0 starting... (PID=29031)
Error: Host '192.168.1.199' specified in service 'PING' not defined anywhere!
Warning: Host 'linux' has no services associated with it!
Bailing out due to errors encountered while running the pre-flight check.  Run Nagios from the command line with the -v option to verify your config before restarting. (PID=29031)
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