If you copy/paste the config file from UNIX, remeber to change the logfile parameter to something like this... May sound silly, but made me a little headache 
# Name of log file.
# If not set, syslog will be used
LogFile=c:\zabbix_agentd.log
Another thing, i have an issue running the agent on w2003 server, i get this message in my log (The w2003 server is located on a VMware virtual machine, connectivity is not an issue, since i can ping all other machines)
Any help would be aprecciated... Thanks in advance... and thanks Alexei for this wonderful piece of software!

# Name of log file.
# If not set, syslog will be used
LogFile=c:\zabbix_agentd.log
Another thing, i have an issue running the agent on w2003 server, i get this message in my log (The w2003 server is located on a VMware virtual machine, connectivity is not an issue, since i can ping all other machines)
Code:
[06-Aug-2006 05:19:06] Unable to add performance counter "\(_Total)\" to query: No se encuentra el objeto especificado en el sistema. [06-Aug-2006 05:22:46] *************** Log file opened **************** [06-Aug-2006 05:22:46] Unable to add performance counter "\(_Total)\" to query: No se encuentra el objeto especificado en el sistema. [06-Aug-2006 05:25:39] *************** Log file opened **************** [06-Aug-2006 05:28:10] Zabbix Win32 Agent stopped [06-Aug-2006 05:28:19] *************** Log file opened **************** [06-Aug-2006 05:28:19] Unable to add performance counter "\(_Total)\" to query: No se encuentra el objeto especificado en el sistema. [06-Aug-2006 05:28:40] Zabbix Win32 Agent stopped [06-Aug-2006 05:44:58] *************** Log file opened **************** [06-Aug-2006 05:44:58] Unable to add performance counter "\(_Total)\" to query: No se encuentra el objeto especificado en el sistema. [06-Aug-2006 05:45:28] *************** Log file opened **************** [06-Aug-2006 05:45:28] Unable to add performance counter "\(_Total)\" to query: No se encuentra el objeto especificado en el sistema. [06-Aug-2006 05:45:50] Zabbix Win32 Agent stopped