SQL Query On Form Data

I need to select the data where the data ID is equal to the variable supplied in the submitted form. Below is the line of code I used for the radio select and the code to do the SQL search on it. I get the following error using this code:

Error Type:
Microsoft JET Database Engine (0x80040E10)
No value given for one or more required parameters.
/MyWeb/CheckIn.asp, line 93

The items are listed by ID 1-X.

<input type=""radio"" name=""CheckIn"" value=x.value>Check In<br>

Dim junk
junk=request.form("CheckIn")
'If Session("UserType") = "User" Or Session("UserType") = "Admin" Then
Set Conn = Server.CreateObject("ADODB.Connection")
Conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("db1.mdb")
Set rs=Server.CreateObject("ADODB.recordset")
'in below, WHERE id = Request.Form("CheckIn")
SQL = "SELECT * FROM CompsIn WHERE ID = junk"
rs.OPEN SQL, Conn, 3, 3

rs.OPEN SQL, Conn, 3, 3 = Line 93