Then, as I was browsing the forums over at BYOAC, I noticed a number of people that had been using Google Sketchup to prototype their cabinets on their PCs. "3D For Everyone", Google say. I thought I'd give it a go.
It really is that easy. Within a few hours I had pretty much the entire cab laid out, stuck together and textured up. If only woodwork was this easy. Here's the results: