How do I start 32bit Internet Explorer from Selenium RC/grid?

I'm using selenium Grid. I have my hub and node running on the same computer. When I start internet explorer it automatically starts the 64bit version of IE. I have add ons that can only be loaded on 32bit version of IE that I need to test.
So how do I change grid to start the 32bit version of IE?

I suppose that you are just pointing on *iexplorer in your parameters.
You need to point on the 32-bits .exe file directly if you want to force its use.