I would like to introduce ddmon which is a floating
drawdown 
monitor. It is a utility EA (an EA that performs some utility function but does not trade) which you attach to any chart using any timeframe. As soon as you attach it to a chart, it will, on every
tick 
, keep track of the difference between your account balance and account equity and display in the experts log, the current DD (if any) in terms of percentage of account and in terms of money.
The ddmon EA has four input parameters. Here they are with a description:
When the ddmon chart is closed or MetaTrader is closed, ddmon will write the DD percent and equity to a file. When ddmon is attached to a chart, it will try to read the previously stored DD percent and equity in the file 'experts\files\ddmon.txt'.
DDmon is a great way to monitor the floating
drawdown 
of a new trading system. I have ddmon running on all of my trading accounts.
License: GPL 2
Enjoy,
Rick