Uh huh! First Office 2007, and then of course Sharepoint!   You can download the Office SharePoint Server 2007 VHD (in 6 parts, 3.7 Gb). 

I haven’t had a chance to try this out yet (I’m still downloading it) - but the documentation mentions “you will need to have Microsoft Virtual Server 2005 R2 installed“.  I’m guessing this is perhaps the VHD uses the virtual SCSI controller, but I haven’t checked.  Once I know more I’ll post back.