Apple Mac support - Drumlin now provides a new program startup link "Drumlin Reader (for Mac users)" that enables Mac users running Windows support software to run Drumlin. This link simply runs the standard Drumlin program with the command line argument "-mac". A range of software has been tested for this purpose - for example, please see the links below and sample Mac user's comments (see Mac User 2 and http://www.mono-project.com/ for linux/unix notes):

http://www.apple.com/macosx/features/bootcamp.html
http://www.vmware.com/products/fusion/ and
http://www.parallels.com/

Some user comments

Mac User 1:

My current Mac is 4 years old and is called a “Power PC model G4.” I am running the Virtual PC 6 with Windows 2000 Pro. Virtual PC was developed by a company named Connectix back in the 90s (no longer exists), but was bought out by Microsoft a few years ago. Microsoft then came out with Virtual PC 7 for the Mac which was bundled with Windows XP. Microsoft is no longer making Virtual PC for the Mac, primarily, I believe, because when Apple switched from the Motorola processor to the Intel Duo Core processor a couple of years ago, Apple could build Macs that could run Windows side by side on a Mac OSX. Microsoft still supports updates for VPC 6 and 7 and you can get updates from a few other websites, but the only place you can get the Applications themselves is places like eBay.

Mac User 2:

I successfully installed .NET2, then Drumlin on my VMware/fusion-based Windows XP virtual machine and ran Drumlin using the mac startup shortcut without any problems. I registered and have now received the registration mail. It works too in unity-mode (individual windows programs interleaved with mac). 

Everything appears to work as expected and I notice no particular anomalies - with the exception that when you mouse-scroll the scroll-bar in the main right-hand window doesn't scroll with the display.

Your earlier versions of Drumlin I had already tested on Windows booted via bootcamp without any problems. Bootcamp is just a dual-boot switcher / bios replacement for windows and is essentially just like running windows on mac hardware with no access to mac os-x (i.e. an either-or dual-boot setup).

BTW: the term VirtualPC is associated with a specific Windows emulation program produced by Microsoft that is now discontinued. It was produced for the older Macs that were based on another chipset (PPC) and does not work on any of the currently purchasable Intel-based Macs (since about 2006). The most common virtualisation products you've already listed. I think there are one or two new ones such as Crossover (http://www.codeweavers.com/) and Wine http://wiki.winehq.org/MacOSX). There is also the Mono Project (http://www.mono-project.com/) which is sponsored by Novell and aims to provide Windows support for linux/unix platforms