mac maya change to pc maya

You need to use the oringinal CD and install the PC version of Maya. Depending on the type of license you have for Maya. I assume you have a legal copy of node locked license, it 'll ask you to type in the computer' ethernet address and software's serial number and send it to Autodesk's website to obtain a license file. Because, most likely, you Mac license has been on file in Autodesk already, you won't let you to get a license.

What you need to do is to go to www.alias.com to fill out a license migration form. All you have to do is to tell them the reason for license migration is platform change. Submit to Alias and they should send you a new license for PC in 24 hours.