Well, went very smoothly - just got the DL off of MSDN subs downloads, mounted the iso as a disk for VMWare, fired it up in "2003 Server" config - installed perfectly! Seems to be better connecting using Terminal Services (RDP) - installing Whidbey now - gotta say, VMWare just kills VirtualPC right now...the current VPC doesn't event pretend to be able to run Longhorn, VMWare is pretty seamless, can't wait to try 2004 now that MS will be 'enhancing' it...I realise there's too many of this type of post around at the moment, sorry for adding to the swarf!
UPDATE: Umm...may have spoken too soon, left for work with Whidbey just about installed, came back and my machine has 'Press a key to reboot' showing....over and over again...hmm...bit worrying! Oh, and the MSDN discs arrived today as well - no Yukon annoyingly!
UPDATE UPDATE: May not have been Longhorn's fault - looks like my main hard disk is on the point of failing (thanks to the SMART prompt when I rebooted) - seems like my bulk mail test (where I wrote 3 million files to disk and deleted them again) may have been a bit too much for the poor thing...