need help with my first handler please

Hi 
Im using c# visual webdeveloper express on windows xp.
when I  run my site to see the handler I get this error below:
Please can you help: below is the error, config file and my class
 
thanks
 
 
error --------------------------------------------- Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: WebApplication1.eventhandler,WebApplication1 does not implement IHttpHandlerFactory or IHttpHandler.

Source Error:


Line 60: <add verb="*" path="*_AppService.axd" validate="false ...