Looking to be able to have another Diablo 2 tab and cd key obviously on computer so I can open and run two diablos at the same time on the SAME computer so I can xfer and have two characters in same game !

Don’t know how to do it can someone help me with this ?

find your diablo 2 folder.

rename folder to whatever you like. right click diablo 2 shortcut and point it where you changed your folder name.

once the diablo 2 folder is renamed, you can then just install diablo 2 normaly with new cd-key.

Seems you got your answer. I completely forgot that I did this back in the day! brought back some good memories. Thanks!