Kernel log mechanism: How to log messages in a different file

Hi, I've written some kernel modules using kprobes infrastructure to grab some more information on network packets. I've lots of printk which by default show up in syslog file(/var/log/messages), I was wondering if there are some method to redirect my printkS to appear in somewhere else(say /var/log/netlog). On a busy system, it gets little cluttered with other logs. Of-course i can grep for my own custom messages but it would be lot more convenient if i can redirect my messages in a separate log file. Considering above can be done, then what about dmesg ? will they still show up in dmesg output ? Regards, Amit