Configuring individual timeouts for service checks

Hi,

I wrote a plugin to check our SVN database running svnadmin verfiy. This check takes upwards of 20 minutes on our repository. The default timeout in our Nagios configuration file is 30 seconds which is perfectly fine for all our other checks. I want to set the timeout for this specific plugin to 30 minutes… but leave the rest at 30 seconds. Is this possible?

I am running Nagios v2 on Ubuntu.

Thanks in advance.