I need help plz on running 2 diablos on 1 comp

[traxxasfreek]

i did everything it says to do on the stickey but i got confused on the comman part. this is what i have for both commands
shortcut1- "C:\Program Files\Diablo II\Diablo2.exe" -w -mpg cdkey.mpq
shortcut2- "C:\Program Files\Diablo II\Diablo2.exe" -w -mpq cdkey1.mpq

and then with shortcut 1 it says the cd key you are trying to use is intended for another product? WTF did i do wrong plz help me!

 

[UnsaNe]

did you double click the reg file?
are you sure the cd keys match exactly?
are you sure these are legit cd keys?