[syslog-ng] Logging Third party application logs to Syslog-NG in Linux!

Dear ALL, I am now using the Syslog-NG OSE for centralized logging system. How could I get the third party application (Linux Client) logs logging to the Syslog-NG server? These third party application logs are not managed by the Linux syslog daemon. Would there be someone gives some information or suggestion! Thanks a lot!!! Regards, Wilson Lai System Engineer IT Dept., SJM Office ( : (853)2978585 Mobile ( : (853)66506709 Email +: : wilsonlai@macausjm.com