As of January 2008 I have ditched my dual-boot setup of Fedora and Windows XP (with Fedora being the default that was used for everything except System.Windows.Forms development) in favour of a pure Fedora setup with Windows XP relegated to a virtual machine for the small amount of System.Windows.Forms development.
The following are Windows/VirtualBox tweaks and fixes that I've discovered, used or had to find for myself.
So far there have been no additions.
Sometimes I come across issues that don't seem to have very good resources to resolve them, or where a search returns lots of questions but no answers. When I finally resolve issues in that category then I will try to include solutions here.