Comparing Results From 2 Different Arrays (checkboxes)

I have two arrays which are values for checkboxes and I need to compare them on the next page when they get submited, The first array I created which is the checkbox values that were selected previously:

1st page:

<input type='checkbox' name="compare" value="131717"/>

  <input type='checkbox' name="compare"  value="131719"/>

Code (markup):

2page.asp?compare=131717&compare=131719

i did try to use this script

<% Dim Connection, Recordset
Dim sSQL, sConnString, iColumnSpan

sSQL="SELECT *  FROM news WHERE newsid IN (" & Replace( Request.QueryString("compare"), "'", "''") & ")"
sConnString="Provider=SQLOLEDB.1;......."

Set connection = Server.CreateObject("ADODB.Connection")
Set recordset = Server.CreateObject("ADODB.Recordset")

connection.Open sConnString

recordset.Open sSQL,connection
If Recordset.EOF Then
Response.Write("No records returned.")
Else

Response.write "<table width=""100%"" border=""1"">" %>

Code (markup):

But i am vulnerable to sql injection using this method.

Any Help Thank you