Snow Leopard Server in Parallels with Retina MacBook Pro (No DVD Drive) I'm trying to install Snow Leopard Server in a Virtual Machine in my Retina MacBook Pro, but I was unable to do it since I don't have a DVD drive in my MacBook.

I've done an DMG file from the original Snow Leopard Server DVD but, it has no effect, since Parallels cannot install Snow Leopard Server from a .dmg file.

Any ideas?

PS: I just want to use Rosetta.
UPDATE: I totally read everything wrong. My mistake.

You should be able to install Snow Leopard Server by converting your DMG to ISO. See this OS X Daily article for full details:

Convert DMG to CDR or ISO with Disk Utility

If you'd rather create the ISO directly from the original disk, that's possible too.