Snort system error 1067

["belen.leyva" <belen.leyva () unitedwaydenver org>]

I am new to the snort world and need assistance.  I installed snort 2.1
on a windows xp pro client and have followed Snort installation guide
for Windows to a t but I'm not able to start the snort service
successfully because of the following message:
    The Snort Service is starting.
    The Snort service could not be started.  
    A system error has occurred.
    System error 1067 has occurred.
    The process terminated unexpectantly.
 
Does anyone how to resolve this error?
 
Thanks in advance.