Displaying comments ordered by a criteria other than data/time of posting.

Hi, I've just started using Drupal to make my first site (very impressed with its capabilities so far).

I'm using the Voting API, Vote Up/Down and Views modules for various purposes on the site. I was hoping to use Views to sort comment threads by their Vote Up/Down score but this doesn't seem to be possible. Does anyone know of a quick and easy way to order comments (threads) by their Voting scores?

I've found a module called "Node Comments" which looks like it would allow me to sort comments this way, but from what I've read it seems to come at the cost of a pretty major performance hit. I'm running quite a few other modules so would like to keep things as efficient as possible.

I imagine its possible to achieve something like this efficiently with a little hack somewhere in the PHP.... but I haven't got a clue where this kind of operation is handled. Any ideas?