I'd actually liek to mention another post That I've just used to create my own MSI for deployment to my organization.. It's a bit more fully fleshed out for those users who have access to Visual Studio and don't know how to create an MSI file...

http://www.mydatabasesupport.com/forums/ms-sqlserver/233916-rsclientprint-deployment-question.html

Once you create you file you can push it out via SMS or Group Policy or whatever.

One thing the above link doesn't remind you to do is in the the Project properties, make sure you set removePreviousVersions = True. That way whenever you update you package and deploy it you don't have to worry about older versions hanging about.

-Luke.