wot20,
First off welcome to TZ.

You will definitely need the Longhorn 4015 disk to perform the upgrade that I mentioned in my previous post. What I was saying was that you will need to have Longhorn 4008 installed, and then get your hands on the 4015 disk/iso in order to upgrade 4008.

No other builds of windows, including XP, can be used to upgrade once you have the LH 4015 cd.

But you can upgrade from build 4008 to 4015 with the LH 4015 CD.


Hope that clarifies.

By the way, windows update does not function in Longhorn as this is a completely unofficial release, that is Pre-Alpha.

Any more questions just ask.