[syslog-ng] Need Log Time in UTC/GMT Format.

Hi All, I need log format with time in UTC or GMT both in Solaris & Linux. How do I set this in syslog-ng.conf file. Basically all the logs should have time converted from local machine to GMT/UTC (Universal Coordinated Time). Syslog-ng versions used are 2.0.1 for Linux & 1.6 for Solaris 8. Please help. Thanks in advance. -Rajeesh