Hi,
Yes, that helps. Because all of the email is stored locally on your Mac, it will be a manully-intensive process to move them to the PC. You will need to use the File > Export function in the Mail application to export all emails/folderws to an MBOX file. Then, depending on what mail application you will use on the PC, you will probably need some form of conversion application to get them into the correct format to enable you to import them on the PC.
I haven't ever migrated from a Mac to a Windows PC, so you may need to do some Internet searches related to what you will be using on the PC.
C