Stopping running process before re-install

[Cavar]

I am using the built-in VS2005 setup project to build my installer.

I have set the project to remove the previous version when installing a new version and I was curious if there was a way to see if the previous version was running and stop it before the new installer continues?

I think it can be done with InnoSetup, but I am not sure, nor too familiar with that product.

CT