API Trading - Automated Bot

I want you to create a simple automated trading program in any language (php or perl, make the most sense). The exchange allows API's w/ JSON for fetching pricing data and trading ([login to view URL]) so this should be rather simple. The program should: Fetch Pricing Data at a set interval, save that to some sort of database Fetch Account Balance Make a set of simple configurable calculations based upon database entries Execute Orders based upon matching the several configurable conditions Log actions taken Run in windows (preferable, although not a requirement if this will be burdensome) I'd basically like a transparent framework which i can configure the calculations and buy/sell conditions on my own.