Well, I solved my issue!
I had checked and rechecked my bas-config.properties file, however I decided to take another look.
I tried changing what the RIM doc told me to create -
DefaultHandheldSoftwareSharePath="\\\\<computer name>\\Program Files\\Common Files\\Research In Motion"
to
DefaultHandheldSoftwareSharePath="\\\\<computer name>\\Research In Motion"
The Research In Motion folder is shared. Bingo!
I thought the former was a bit odd, as the path they gave was more of an absolute path. I should have known better. DOH!