DotNetNuke Developer Chris Hammond

A piece of cake, I just passed it this month with no preparation at all.

3 words, Transcender, Transcender, Transcender. The best prep. And of course, MSDN, and trying out code samples.

I've been working on asp.net/c# since release, I passed the exam last summer.

I tried a couple Trans exams and DataSet.Merge was the only thing I needed some prep for, I had never used it.

The big areas to pay attention to:
- Caching. Know about invalidating, sliding expirations, leases, etc.
- Anything relating to ADO.NET, especially DataSets.
- All the elements in web.config, especially one's relating to security.
- The events in Global.asax and when/in what order they fire.
- How to write a custom user control (and how to set/get properties defined in the control from asp.net declarative code).
- Debugging/tracing/etc.

If you've worked on any medium to large scale asp.net systems, you'll probably only need to spend a weekend brusing up on stuff (the Prof ASP.NET wrox book covers everything you'll need). I personally wouldn't waste any money on trancendors if you have real world experience, though they are quite thorough.