Hi, Jeff
If you're using 2.2, then you can get the base features without worrying about trial licenses. The article you reference is from 2.1.
The updated article for 2.2 is here:
http://www.ibm.com/developerworks/data/library/techarticle/dm-0909optimpackaging/
Links to downloads are included there or you can go to the Data Studio web site at
http://www-01.ibm.com/software/data/optim/data-studio/
Hope this helps.
Kathy