Basically, no.
As more and more companies come online with Bitcoin, this will be possible, but at the moment you'll either need a third party, or to cash out.
Personally, I'd LOVE to see this. But that's kinda what the Bitcoin thing is all about
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
To make a new currency, removed from the usual anchors, which will (hopefully at some point) be accessible and acceptable to everyone.
Rit.