I sent 0.2 btc, but the internet was down. Now it's stuck at 0 confirmations for over 20 minutes now. Is there any way to force another broadcast of the transactions?
It will be automatically rebroadcast. However, you may have to wait until you've updated your blockchain and have a few connections.
Edit: bah, looks like it will only do that after a few days. Try restarting the client.