I have created a stored procedure of insert command for employee details in SQL Server 2005 in which one of the parameters is an image for which I have used varbinary as the datatype in the table..

But when I am adding that parameter in the stored procedure I am getting the following error-

Implicit conversion from data type varchar to varbinary is not allowed. Use the CONVERT function to run this query.

Stored procedure:

( 
    @Employee_ID nvarchar(10)='', 
    @Password nvarchar(10)='', 
    @Security_Question nvarchar(50)='', 
    @Answer nvarchar(50)='', 
    @First_Name nvarchar(20)='',
    @Middle_Name nvarchar(20)='', 
    @Last_Name nvarchar(20)='', 
    @Employee_Type nvarchar(15)='', 
    @Department nvarchar(15)='', 
    @Photo varbinary(50)='' 
)

insert into Registration
(
      Employee_ID,
      Password,      
      Security_Question,
      Answer,
      First_Name,
      Middle_Name,
      Last_Name,
      Employee_Type,
      Department,     
      Photo     
)
values
(
      @Employee_ID,
      @Password,     
      @Security_Question,
      @Answer,
      @First_Name,
      @Middle_Name,
      @Last_Name,
      @Employee_Type,
      @Department,      
      @Photo   
     )

Table structure:

Column Name        Data Type                 Allow Nulls
Employee_ID    nvarchar(10)             Unchecked
Password       nvarchar(10)              Checked
Security_Question   nvarchar(50)         Checked
Answer             nvarchar(50)              Checked
First_Name     nvarchar(20)              Checked
Middle_Name    nvarchar(20)              Checked
Last_Name      nvarchar(20)              Checked
Employee_Type      nvarchar(15)              Checked
Department     nvarchar(15)              Checked
Photo              varbinary(50)         Checked

I am not getting what to do..can anyone give me some suggestion or solution? Thanks in advance.