a little more on target to your install question (and also to the question about pay vs free) ... the Express version come with an install option known as ClickOnce Install, and that's it. It allows you to publish the installation files to a location where others can then click the install. It will then install, and run the app. it's convienient, because it allows you to easily update the app (you publish the app, they click, it updates).

That doesn't mean it's your only option, you certanly still have the third party option.

The paid version then also comes with an additional projecty template that will allow you to compile an MSI install file that you can distribute.

-tg