I already have one box (the Shuttle XPC) that is running Windows Server Codename Longhorn Build 5219. Because it wasn't all that much of a hassle when compared to Beta 1 of Windows Vista, I decided to set up Longhorn on my laptop - and try to work with that installation for a week, while I am in Seattle for the MVP & AspInsiders summits. Boy did I end up with an installation marathon...

Lessons learned in this Sunday's "don't try this at home kids" department:

• Don't assume that ATI drivers for your IBM X31 will install on Longhorn. They refuse, making for rather crappy UI performance. By the way, on failing, setup suggests to install a VGA driver first.
• None of the network adapters were found - neither the onboard LAN, nor the onboard WLAN. When you peek into Computer Mangement, it is your guess which of the two "Ethernet Controller" is which.
• Don't only update the driver for one, even if it is the LAN one. Your ISA 2004 client installation will mysteriously fail. After installing drivers for all LAN equipement, it just works.
• Minor annoyance: the OS-provided sound driver produces hisses et al. Not too bad, but annoying if you plan to watch loads of Channel 9 movies. Your guess is correct: the vendor-provided driver refuses to install.
• No standby. That sucks royally.
• You learned about that in my previous post - no .NET 1.1 for you by default.
• Installing VS can be so much fun, especially if MSXML 6.0 refuses to install as part of the default install. Doing it separately works so much better. And the "Locate File" dialog for the VM driver irritated me only for the better part of a minute...
• Before installing the Atlas VSIs, you better start VS at least once. Otherwise the Atlas installation will fail. Only mildly interesting.
• Do I need to mention that Virtual PC networking doesn't work? That one didn't change for the better, which will make me dual boot into XP.

On a different note: default installs of 5219 have a blank password for Administrator. And IIS 7 is installed by default, which really baffled me. I'm so trained to enable features after install that at first I was thinking it was not part of the bits I got...