Well, after a dodgy start (had to change AGP aperture size to 128mb) that had me puzzled for a fair while, things are now doing ok.
PC-BSD is an absolute doddle to install as is extra software.
The easy way to install extra software is by using the pbi packages, which are a simple double click and follow the install wizard, much like windows.
The system is noticebly faster than Linux, in startup, running and shutdown.
The only thing I am currently having issues is my Audigy 2 ZS. It appears it's using the correct driver but I have no sound.