[iTunes] Subscribe to podcast from another Mac?

[i.am.list.boy at gmail.com]

Now that I've got my Macbook Air, I hardly touch my '03 Powerbook.

But I'm keeping my iTunes library management / podcast feeds on it. I have an external 1 TB drive hooked directly to it, which holds my iTunes music folder.

Both laptops are wirelessly networked, with file sharing on.

Is it possible somehow to subscribe to podcasts on the copy of  iTunes on the Powerbook ... from the Air?