The site was getting hit by spambots last year so the extra CAPTCHA was required.
Check the bottom of the page, where "BTC:" is at under the bitcoin logo. If it says BTC: 26.52, you type in 26.52
Prices are in USD. The exchange is Mtgox.
Also: It appears that the ISP for my hosting provider is having issues today, so the website may be up and down throughout the day...