I don't adam and eve it.
One of my schools uses RMMaths (a networked math skills prog thats seems very good BTW) and it didn't like being transferred from my old Win98 file server to a new W2k3 server.
I rang RM for help.
I've never ever received such support before.
They let me explain the problem in english then after trying a few things - put me through to someone who really knew about the product. Having (nicely I hasten to add) telling me I shouldn't have tried it the way I had - he just tried his best to help until the lack of the install CD at our end did him in.
When we eventually found the CD and rang back they managed to sort my problem out.
I've called this company some names in the past (mainly for the atrocious mess they made of customising Win98 a few years ago) but today they shone.