I don't have the ability to do that but I started with 25 as well after going bust a few years ago. Look at me now.
back in 2008 I kept betting 25 until I won and then just kept going http://forums.theganggreen.com/showthread.php?t=38829 http://forums.theganggreen.com/showthread.php?t=38630 Click on the bet options and you can see my bets. 25 at a time because that's all I had.