Diablo 2 -No cd help

[snowie]

files with the extension .rar are files created with winrar.

So you have to find the program winrar (I believe you can find it on the mainpage of gamecopyworld)
install the program (then it's best you reboot)

now double click on the .rar file and it wil open, now unrar the files to youre harddisk and use the files as described (it works the same ass winzip

that's it