The XP in Virtual Box on my iMac is still working great, but the solution is limited to running one virtual PC at a time (not techincally - but performance wise).
I need some test machines, and by luck I got an IBM eServer xSeries 346 with a nice RAID 5 array. I installed the free vmWare ESXi, and I now have 3 virtual servers running nicely on this setup. ESXi does not have the nice web based management tool like the vmWare Server, and the client manager is not available in a mac version, so I have to run it from the virtual XP, but it works. With wake-on-lan I can even start and stop the test server remotely.
Now it's time to get the new DotNetNuke 5.2 version, and see if I can get more knowledge on the content localization api, which is included. Yes I know that there are no UI support items yet, but I am eager to see what they have finally done with the implementation. I have search the DNN site and google, but I haven't been able to find much information about the implementation yet, - please drop me a note or link if you have access to documentation on the Content Localization API for DotNetNuke.