I've suffered the first setback with beta 2 / Longhorn. My machine running as a domain controller / web server suffered a BSOD (blue screen of death) after loading the unix sub-system "feature". Here is the BSOD error. "c000021A {fatal system error} The initial session process or system process terminated unexpectedly with a status of 0x00000000 (oxc00000fe 0x00100140). The has been shutdown.". I was daring and tried loading Longhorn on a real machine. Back to virtual server 2005 R2 for beta builds, it took 3 days to get this machine to load the OS. :)
Other notes, my other machine running Longhorn finally loaded SQL Server 2005. I needed to un-install "sql server native client" which I believe is installed when .NET 2.0 is installed. After this, I received one error when the installer was removing the sql server 2005 install files but the setup completed successfully. Thanks to Paul Murphy (http://aspadvice.com/blogs/pmurphy/) informed on a list Trend has a beta version of anti-virus for Vista. https://www.trendbeta.com/index.php?get=80.
I've been reading up on IIS 7 and configuration settings, www.iis.net has good articles under the TechCENTER section. Here are some other links I found with IIS 7 information.
Tis was a short day I only had an hour or so to "geek" before doing family holiday things! Happy Memorial Day.