The Bloo Lagoon
Where fun meets message posting!
I wanted to try the "impossible" like Michael MJD did: installing another OS inside a VPC 2007 installation of XP. After installing VPC 2004, it gave an error that a VPC 2004 virtual machine cannot run inside a VPC 2007 one. So I will try the challenge by installing an old version of VMWare on it tomorrow.