Changing the Registered Owner

Start Regedit
HKEY_LOCAL_MACHINE\SOFTWARE\M'zoft\Windows NT\CurrentVersion
From there you can edit the name in the Registered Owner key

-Opening a Command Prompt to a Particular Directory from Explorer

If you want to open a command prompt to a directory that is selected in the Explorer:

Start Regedit
Go to HKEY_CLASSES_ROOT \ Directory \ shell
Create a new key called Command
Give it the value of the name you want to appear in the Explorer. Something like Open DOS Box
Under this create a new key called command
Give it a value of cmd.exe /k "cd %L"
Now when you are in the Explorer, right click on a folder, select Open DOS Box, and a command prompt will open to the selected directory.
Download reg file