My workplace is all PC, apart from possibly the planning department because of the CAD software they use. It's difficult enough remembering to convert files from my own machine back to the old style Office docs without having to cope with a completely different set of software.

I feel for you. This isn't the first time I've met a bloke who seems to view his Mac as an external gold plated penis. I can't imagine what it must be like to work in an office full of them.