As it refuses to install on a drive smaller than 40GB and is itself around the 16GB mark when installed - I had enough fun trying to install it to a 32GB SSD.

Started with installing to a 40GB+ drive and then attached that drive to my trusty XP box along with the SSD - fired up Acronis and resized the partition down to 32GB and cloned across to the SSD.

Popped it back in the machine and run a boot repair - away we go.