For those that are *nix challenged (like me). Here are more detailed instructions. Make sure that 'Telnet Client' is installed on your Windows machine under 'Turn Windows features on or off'. Create the shares you want in Windows. My example will use the shares "Movies", Music", and "Photos". Know what the ip address is of your PBO and your Windows machine. Verify your shares work by opening up a Windows Explorer window and in the address bar type "//10.10.10.10/Movies" and hit Enter. If you cannot find your shares, the PBO links will be empty.
Run cmd (to bring up a command prompt)
Type telnet 10.10.10.30 (or whatever the ip address of you PBO is)
Venus login: root
Type vi /usr/local/etc/rcS (this is all case sensitive)
/ # vi /usr/local/etc/rcS
Hold in the down arrow until you get to the bottom.
Hit the End key to go to the last character of the last line.
Type i (this will put the editor into text insertion mode. Note the 'I' in the bottom left corner)
Right arrow one more time to get to the end of the line.
Hit the Enter key.
(or whatever the ip address of your Windows machine with the shared drive is)
mkdir -p /tmp/ramfs/volumes/Movies
mkdir -p /tmp/ramfs/volumes/Music
mkdir -p /tmp/ramfs/volumes/Photos
mount -t cifs //10.10.10.10/Movies -o username=guest /tmp/ramfs/volumes/Movies
mount -t cifs //10.10.10.10/Music -o username=guest /tmp/ramfs/volumes/Music
mount -t cifs //10.10.10.10/Photos -o username=guest /tmp/ramfs/volumes/Photos
Hit the Esc key (this will get out of insertion mode. Note the 'I' will change to a '-')
Type :wq (which means save and quit)
Type exit (exit out of telnet)
Type exit (exit out of command prompt)
This is what I needed to do to get my Vista shares visible under the HDD on the PBO. This makes is much easier for the kids and my wife.