What's The Best Way To Create A Stored Procedure That Queries With Multiple Parameters?

 

If I were to create a stored procedure that searches a table using (optional) multiple parameters, what would be the best way to do the search.  I want to try and avoid using several "IF" statements (like IF @FirstName IS NOT NULL, etc).  How would I do it, or would I just be better off using several "IF" statements?  Thanks...

 CREATE PROCEDURE intranet_search_GetEmployeesBySearch
(
@FirstName NVarChar(100),
@LastName NVarChar(100),
@Phone NVarChar(50),
@Cell NVarChar(100),
@Pager NVarChar(100),
@Ext NVarChar(50),
@Email NVarChar(100),
@Department NVarChar(200),
@Position NVarChar(100),
@IsManager Bit
)
AS
BEGIN

SET NOCOUNT ON;




END
GO