Here are some links to Visual Analyzer info -

http://www.goodtraining.com/blogs/the_saleslogix_product_blog/archive/2007/07/25/new-saleslogix-dashboard-module.aspx

http://www.goodtraining.com/files/folders/saleslogix_v7_2/entry367.aspx

http://www.sagecrmsolutions.com/products/sagesaleslogix/dashboardsandreporting/visualanalyzer

Your SalesLogix Business Partner should be able to get you a demo too.