The latest version of Orcas is available as a VPC here:
http://www.microsoft.com/downloads/details.aspx?FamilyID=b533619a-0008-4dd6-9ed1-47d482683c78&DisplayLang=en
The problems is that the image ships with the operating system requiring immediate activation and a password that seems to have suffered a character translation; both of which can keep you locked out for a very long time.
The password to use for the Administrator account is P@ssw0rd (not P2ssword as the documentation tells you).
The NIC card on the VPC will need to be enabled to get the activation completed (without resorting to a telephone call). Select Edit/Settings/Network from the VPC menu, and change your network card to match your installation and then you should be able to perform an online activation.