When I initially setup my My Documents folder for sharing, the wizard launched, I named my PC, named my workgroup, let it finish and then I think I right-clicked the folder I wanted to share, went to Properties>Sharing and ticked the box "Share this folder on the network". I honestly can't recall 100%, I just remember thinking that it seemed redundant to have gone through the wizard and then ticked a box for exactly what I thought I just did, lol.
I use a router that assigns my PC an IP address of 192.168.1.x (x generally 1,2 or 3). Open up ES, go to remote, add a new server and I just typed in my IP address where the cursor started after the 'smb' part. No username or password...annonymous ticked.
That's what worked for me.