Sometimes it helps to read READMEs and manuals.
Got my Tanager flashed with Smartphone 2003 bits recently. This reduced my average battery life to about 30% (since it uses beta drivers and apps which are not optimized - or so I am told...), but it gets me ... the .NET Compact Framework! Finally!! On my phone!!!
Started thus porting a CF task manager app for Pocket PC to Smartphone (mostly UI, a few performance things) and tried to "Build CAB file" from within VS.NET. ERROR! "CabWiz.exe" could not be invoked... Googling for the answer, I found out that this is described in the README for the Smartphone 2003 SDK. You have to use CabWizSP.exe on the command line. It's a pity they did not integrate this properly in VS.NET. So, back to hand-crafted INF files. But I got my task manager, and it's one of the more useful utilities. (Imagine using XP without task manager ...)