Updated again:
- Settings now stored -- the exchange and your update frequency/percentage are now remembered.
- BTC-E supported (SSL certificate problem found -- need to check exactly why this was happening but currently I'm not bothering with checking certificates as security isn't really an issue when checking the exchange rate).

I'm working on:
- Wallet notifier: using blockexplorer to check address balances.
- Maybe more exchanges. Definitely looking at including the http://www.ounce.me/ average, and other data from there.

//Edit: and yes, absolutely horrific looking UI implemented.