Convert VMDK flat file to VHD
I was able to use the free StarWind Software's V2V converter to convert a vmdk flat file created in ESXi (3.5) to VHD format for Virtual PC. I had tried another converter made by Prowess (SmartVDK) but this would not recognize the flat vmdk files; neither did the VMDK2VHD tool by vmToolkit. I have not tried WinImage but others have reported success with it. Make sure to keep the .vmdk descriptor file (usually under 1 KB in size) -- you would use this as the Source disk, not the -flat file directly. There may be some BSOD or driver issues - see Jerome Laban's blog on how to resolve this.