How to check if IIS is in 32bit or 64bit mode

I'm trying to deploy a site to a 64bit OS. I'm deploying to IIS6. The site was developed on a 32bit server. The site deployed correctly however it's trying to access a COM component and that is failing.

I believe the error is occurring because the COM component is a 64bit version on the 64bit OS. And IIS6 is running in 32bit mode on the 64bit server.

I'd like to confirm this but I can't seem to find a definitive way to check if IIS6 is in 32bit mode or 64bit mode.

Would someone know the best way to check if IIS6 is in 64bit or 32bit mode?

EDIT: I'm using IIS6