File Sharing exFAT-formatted drive -- not showing up (despite accounts)

Hi everyone,

I've run into an issue that I'm not quite sure how to resolve.

I am quite pleased about Win7 and Snow Leopard both having native exFAT support. I teach at a college where there is both Mac and PC labs, and I have 2 macs and a pac at home.

In my guest bedroom's closet, I have a mac-mini that's on server duty; I have a Drobo & 2 external hard drives shared via a 2-slot (thermaltake) dock (using USB). One drive in the dock is formatted HFS+, and shares out fine. I have since added the second, and formatted it as exFAT (which I'm hoping to eventually do with them all).

Regardless of how I seem to setup file sharing, and regardless of it having all the needed accounts on the shared list for the drive in preferences (it's even set to 'everyone'), the drive will not show up in the finder on my macbook pro. What I am trying to determine -- and maybe someone out there can confirm or not...since exFAT doesn't support permissions (I don't think), is this why it won't show up? I would think this wouldn't be the issue...but I can't figure it out otherwise.

Any help is greatly appreciated!

Thank you!

John