1)   Help Desk for IIS 2.0
Help Desk for IIS is a web-based help desk software solution for delivering customer service and support. It easily installs on your web server as an ISAPI extension for Microsoft Internet Information Services.

 2)   Responsive Knowledgebase 1.01
RKB is a helpdesk tool that allows you to record solutions to problems and search for those solutions in the future. When a customer calls in with a problem, you can quickly search the database and locate the solution.