Updating records When updating records you basically have two choices.

You can build a SQL statement like
        sSQL = "update xxx set yyy=" & Request.Form("yyy") & " where id=" & Request.QueryString("id")
        oConn.Execute sSQL
Or you can open a recordset and call oRS.Update.
I prefer the second one, since it gives a couple of advantages in date handling for example. In the AdMentor code I used the first way for inserting records into a traceclicks log table which had a datetime timestamp column. I built the statement like:
        sSQL2 = "insert into traceclicks( bannerid, page, dt, ip, undertext ) values (" &nBanner; & ","
        sSQL2 = sSQL2 & "'" & Request.ServerVariables("HTTP_REFERER") & "','" & now() & "','"
        sSQL2 = sSQL2 & Request.ServerVariables( "REMOTE_ADDR" ) & "', " & fUnderText & ")"
        oConn.Execute ( sSQL2 )
Some users ( from Germany actually ) complained that they got an error in this function. I rewrote it like:
        Set oRSTC = Server.CreateObject("ADODB.Recordset")
        Set oRSTC.ActiveConnection = oConn
        oRSTC.Open "select * from traceclicks where bannerid = -1 ", ,adOpenKeyset,adLockOptimistic
        oRSTC("dt") = now()
        oRSTC("ip")=Request.ServerVariables( "REMOTE_ADDR" )
And it worked without problems. It was the dt part of the statement that didn't work. I never actually got clear on exactly why it didn't work ( since I know there were other installations in Germany that worked ) but since I got it working I know I will always use that method. The problem with this method ( when adding a new record ) is that you need to open a recordset. As you can see I use a bannerid that will never be used - this way I make sure no unnessecery transfering of unused records is done. Now for the update code template:
        Set oRSTC = Server.CreateObject("ADODB.Recordset")
        Set oRSTC.ActiveConnection = oConn
        oRSTC.Open "select * from xxx  where id = " & Request.QueryString("id"), ,adOpenKeyset,adLockOptimistic
You will need to send an id in the QueryString.