I am not sure what went wrong.You first download the zip file called Disk2vhd. Then you don't need to install the aplication. It is a portable application. You just need to run it. If the application cannot run, then two or more basic services that are important for Disk2vhd are disabled or removed. These services are: - Microsoft software shadow copy provider - Shadow protect service i'm sorry i was a-bit misleading, the error comes during the os install, off of the dvd. after setup is starting screen, error screen pops up ... , i googled, similar problems but nothing definitive. thanks anyway