If you simply sysprep a Windows install using DriverPacks with KTD, the only two things lacking in order to make a universal image are the x0...07b/mass storage controller problem and the HAL problem. Some relatively minor things break that way (HD audio), but are easy to fix. There are several methods for resolving the HAL issue. I haven't found any satisfactory solution to the x0...07b error; manually adding lines to the sysprepmassstorage section has problems with Intel drivers in particular and is tedious in general, and I haven't found a FixIDE script newer than September 2006. This method doesn't seem to solve the mass storage problem either. What are the advantages to using this method over the aformentioned method?
My first post here, so I'll start off with some info I found very helpful for this issue.
If you go to this Microsoft KB Article KB314082, it explains in detail how to get around the 0x0000007b error.
I've successfully created a single sysprepped image which works on the following PC's
Acer 5100, Acer 5600G, Acer SK-30 & SK-50, Acer 3700GX, IBM Thinkcentre A50 as well as a few custom builds with Gigabyte and Asus motherboards. The only PC I couldn't get the image to work on was a current model Optima WorkPro X860, which is a Q965 chipset board, however changing the SATA from AHCI to Legacy resolved fixed it and it worked fine. I'm still looking into how to get this to work in AHCI.
Anyways, I hope this helps you guys out...