File Sharing Windows folders between two Macs

For some reason I am having a bit of trouble with this. Tried some searches and didn't come up with much.

I am able to share a Windows folder and I am able to access it with a second copy of Windows on the same Mac.

However, when I try to Map the Network Drive in Windows on a different Mac it cannot find the shared folder. Not sure what needs to be done to make the share visible on the second mac.

So, it's like this:
Mac 1 > Parallels > Windows > Shared Folder
Mac 2 > Parallels > Windows > View Shared Folder

Possible to do with Parallels or impossible? I'm able to Map Network Drives from other just plain Windows based machines on my network just fine. Any help would be greatly appreciated!