Notes browser plug-in upgrade question

Can smartupgrade or the user of an MSI installer be used to upgrade the browser plug-in from an older version to the latest 9.0.1FP4 version? We are curious on how we manage the upgrades for the plug-in over time to our user community.

Subject: Any method available then to send update out to users?

Thanks Bradley for your reply. Are there any other options to send the browser plugin update to users?

Subject: Smart upgrade

Smart upgrade is used to upgrade the Notes Client, not just a feature (such as the browser plug in)