Is there a site where I can play single player backgammon for practice?

I recently learned to play, and I would like to practice. I only have internet access at work, (yes it’s allowed, under certain conditions) and I can’t always sit down to play uninterruptedly with another person. I’ve looked at many different sites and everything I’ve found is two player.
Backgammon on Yahoo doesn’t have robot players.

Zone won’t load on my computer.

But thanks anyway.