Find out more
Here are more online resources:
10 Tips for Writing High-Performance Web Applications http://msdn.microsoft.com/en-us/magazine/cc163854.aspx
Configuring HTTP Compression in IIS 7 http://technet.microsoft.com/en-us/library/cc771003(WS.10).aspx
IIS 6.0 Technical Reference http://technet.microsoft.com/en-us/library/cc775635(WS.10).aspx
IIS Compression in IIS6.0 http://weblogs.asp.net/owscott/archive/2004/01/12/57916.aspx
Everything you ever wanted to know about compression, but were afraid to ask http://geekswithblogs.net/JamesFleming/archive/2010/02/04/everything-you-ever-wanted-to-know-about-compression-but-were.aspx
Measuring the Performance Effects of Dynamic Compression in IIS 7.0 http://www.webperformanceinc.com/library/reports/iis7_compression/
Let's make the web faster http://code.google.com/speed/articles/use-compression.html
Page Speed tool http://code.google.com/speed/page-speed/download.html