Watchdog configuration ? or disabling it ?

I’d like to know how to disable just the watchdog in the Linux (Redhat 5).
I could just boot in runlevel 3 (command line mode), but due to other reasons, I’d just want to disable watchdog in runlevel 5…
so that I can run the kernel for more than 5 seconds…

Is it possible ?

There is no way to do it that I am aware of.