WAN File Sharing

I'm looking to Share a folder on my Vista Ultimate machine. I want this
folder to be accessible via the WAN. Simply put, is this possible? I have not
found information going either way right now.

Firewall is using Windows One Care

What I've tried:
-Enabling File Sharing.
-Enabling Public File Sharing.
-Enabled Firewall exception for File Sharing.
-Disabled Firewall
-Enabled Router port forwarding for UDP 137,138 TCP 139,445
-Enabled DMZ on Router for the PC

I don't want to do this via VPN connection

Basically I've tried all I know. So I'm assuming this can't be done,
security reasons for this?Probably. I can't even telnet into the above ports
to see if it will accept the connection. RDP with port forwarding works fine
as does Web Access.


Reason? I do programming at both Home and Work, but would like a centralized
location of where the projects are stored. If I could get to my Home PCs
Shared Folder using the UNC path, that would be great.