Microsoft Community (formerly Microsoft Answers), where I also work, is another avenue but their knowledge/support with .NET Framework is limited - as is mine- and referrals are made to MSDN in many cases when no one can find the proper solution.
Work? I also answer questions there and since becoming active again in the XP section during the last 2 weeks, I have helped fix the overwhelming majority of .NET update problems.
Although .NET Framework versions can be installed in any order, Aaron Stebner recommends to install .NET Framework in reverse order
I'm familiar with his blog.
That blog post is somewhat dated. Regarding order, it list 2 bugs total as affecting XP SP2 not SP3..
My only take on order is that I wouldn't install 2.0 separately and then install 3.5 since 3.5 includes 2.0 but that's about it IMO.
Edited by .X., 26 July 2013 - 04:51 PM.