You'll also find information on how to join and participate in Wageweb's salary survey services. Data from each of seven job categories is analyzed according to a variety of factors, such as hours worked per week, industry experience, and annual compensation. This 1999 report from The Society for Technical Communication provides comprehensive compensation statistics from the U.S. and Canada. You'll need Adobe Acrobat Reader to view it. You'll find a good cross-section of information systems salaries at DataMasters' 2000 Computer Industry Salary Survey.
Information is available here to order a full report.