Yo Mikey
Is that why Microsoft set up XP to look EXACTLY like Mac OSX and function EXACTLY like Mac OSX... which is a proprietary front end to, you guessed it, a Linux Kernel.
And as to paying the retraining costs.... who paid for all the training in the first place? Was it the sysadmins? I think it was more likely their employers, and unless I'm mistaken, there are new courses with every new version of windows.... so instead of doing the Vista course, why not do RedHat, SuSe (and I defy anyone who doesnt respect Novell as a player in the networking field) or even Ubuntu.
Right, rant over, I'll get my coat.