If you pm me with your email address, I'll be happy to send you a pdf file that Ken referred us to about 4 years ago. Everything you need to know is in that file.
Here's a link to the thread that Kent originally started on straw bale gardening - lots of good info there on the process. That PDF that was mentioned also is a great resource. www.4042.com/4042forums/showthread.php?t=12405 Hope that helps!