Volume shadow copy backup script

I need you to write me a backup script that does this. 1) Read the drive letter as a parameter. 2) Cause a volume shadow copy of the drive to be created. 3) Mounts the volume shadow copy as c:\shadow_area 4) Copies c:\shadow_area\somefile to d:\backuparea\somefie 5) Removes the shadow copy "somefile" will obviously be changed in the production version of the script, but I'll change this line of text. The real file is about 170GB if this matters. I doubt it matters so feel free to use a one line text file for testing. Deliver is required today. I'm not bothered about the language this is written in, but it must run without the installation of additional software and needs to be a script. I think this narrows the languages to dos scripting and powershell(?) Thanks