There is a new posting in the PSS SQL Server blog that gives even more detail about installing the SQL Express editions including good information about the prerequisites. It's the same type of information posted here, but Bob Ward is a more advanced blogger than I am so he's included pictures and everything. This is great info; a big thanks to Bob for his efforts to put this post together. Be sure to poke around the PSS SQL blog post while your there, they cover a wide range of topics that other customers have asked about so you know it's information that people are looking for.

 - Mike