WebParts deployment - Solutions for SharePoint 2007

I found a good article on the CodeGuru explaining steps to deploy solutions in MOSS:

http://www.developer.com/net/net/article.php/3672646

Say the truth, I used the save principle in the SharePoint 2003, but installation was straight forward and could not be controled by system administrator from the administrative pages.

Seems, SharePoint 2007 solved this problem - let's see.