ASP.NET help

[. .]

Hi

I am developing a web page in ASP.NET/VB.NET which will list all the
message types for a specific department of my company . This page would
allow the super user to view all other department type. But if the user
is not a superuser he /she can only see the message type of a department
he/she belongs to .

I have got a specification for the methods but does not understand how
do I build the page using this method . The method is like below .

adddepartmentmessagetype(By Val DepartmentId as Integer...) as Integer

( webmethod) - adddepartmentmessagetype( By Val Authkey asInteger....)
as integer .

I need help with how to start the aspx page with this method

Please help