It's easier to get from Mac to Windows than the other way around.
In Finder press CMD+K type in smb://(ip adress of Windows machine)
It'll ask you for a user name and password, type in the user name/password of your Windows PC.
In Finder press CMD+K type in smb://(ip adress of Windows machine)
It'll ask you for a user name and password, type in the user name/password of your Windows PC.