Share a windows drive across internet

I have a remote computer (static public IP,windows 2003 server, NO domain) which I can access via Windows Remote Desktop, and have administrator rights.

I want to connect a network unit in my home pc via internet, to a remote shared folder in this remote computer.

Is there an easy way to do it? No need to secure connections, VPN, etc… just an easy way, so I can type \\RemotePublicAddress in my windows XP, an access it as if it was on my home LAN.