Get 0 to replace the NULL in the database if a checkbox is unchecked by the user....

Hello Everyone, I need some code which will replace NULL with 0 in the database when a checkbox in unchecked by the user, when the page is submitted... even if the checkbox is not touched by the user, that means it remains unchecked, since they're all unchecked to begin with, even then it should change to 0 when the user moves on to the next page....

This application has 3 pages and you can navigate either with Previous or Next buttons or by clicking the page number... All the pages are posted to the same validation page called save.asp and this page updates the database every time a user leaves the page...

The code on my first page has checkboxes which display as NULL in the database if they are not checked by the user and 1 if they are checked

Here is the code on the first page:

<form action="save.asp" id="OPICForm" name="OPICForm" method="post" onSubmit="return ValidateSubmit();">

<input type="checkbox" id="LearnConference" name="LearnConference" value = <%=sLearnConference%> <%=sLearnConferenceChecked %>>Conference<BR>

<input type="checkbox" id="LearnWebsite" name="LearnWebsite" value = <%=sLearnWebsite%> <%=sLearnWebsiteChecked%>>OPIC Web Site<BR>

<INPUT type="submit" style="width:75px;" value="Previous" onclick="setInputValue(document.OPICForm._target,'Previous');">
Jump to page: [<A href="javascript:SubmitForm('00');">Intro</A>]
<STRONG>[1]</STRONG> [<A
href="javascript:SubmitForm('02');">2</A>] [<A
href="javascript:SubmitForm('03');">3</A>] [<A
href="javascript:SubmitForm('04');">Review</A>] <INPUT type="submit" style="width:75px;" value="Next" onclick="setInputValue(document.OPICForm._target,'Next');">
<BR>
<input type = "submit" value = "Save and Close" id = "SaveClose" onclick="setInputValue(document.OPICForm._target,'SaveClose');">


<%
sqlValues = "SELECT * FROM tableName WHERE FK_id=" & id
set rsValues = Server.CreateObject("ADODB.Recordset")
with rsValues
.open sqlValues, objConn,3,3
if .Recordcount=1 then

      sLearnConference     = .Fields("LearnConference")
      sLearnWebsite              = .Fields("LearnWebsite")
end if
.close
end with

if .Fields("LearnConference")=true then sLearnConferenceChecked = " CHECKED " else sLearnConferenceChecked = "" end if
if .Fields("LearnWebsite")=true then sLearnWebsiteChecked = " CHECKED " else sLearnWebsiteChecked = "" end if

%>
<script>
function setInputValue(obj,value){
      var use_default=(arguments.length>1)?arguments[1]:false;
            if(isArray(obj)&&(typeof(obj.type)=="undefined")){
                  for(var i=0;i<obj.length;i++){
                        setSingleInputValue(obj[i],value);
                  }
            }
            else
            {
                  setSingleInputValue(obj,value);
            }
}
function setSingleInputValue(obj,value){switch(obj.type){case 'radio': case 'checkbox': if(obj.value==value){obj.checked=true;return true;}else{obj.checked=false;return false;}case 'text': case 'hidden': case 'textarea': case 'password': obj.value=value;return true;case 'select-one': case 'select-multiple':
var o=obj.options;for(var i=0;i<o.length;i++){if(o[i].value==value){o[i].selected=true;}else{o[i].selected=false;}}return true;}alert("FATAL ERROR: Field type "+obj.type+" is not supported for this function");return false;}
</script>


CODE ON the save.asp page (the page it's posting to:)

%
'Angie H. -- Test checkboxes
dim LearnConf, Website

'FIRST CHECKBOX -- CONFERENCE
If Request.Form("LearnConference") <> 1 then
 LearnConf = ""
Else
 LearnConf = "CHECKED"
End if

if((LearnConf) = "CHECKED") then
      Request.Form("LearnConference") = 0
end if

'SECOND CHECKBOX -- WEBSITE
If Request.Form("LearnWebsite") <> 1 then
 Website = ""
Else
 Website = "CHECKED"
End if

if((Website ) = "CHECKED") then
      Request.Form("LearnWebsite") = 0
end if
%>

Can you help me figure out what's wrong with this code, why it does not change the database value from NULL to 0 when the checkbox is unchecked?

I get this error when I click NEXT:
Microsoft VBScript runtime error '800a01b6'

Object doesn't support this property or method: 'Request.Form'

/angieapps/52/save_sv.asp, line 18

and it's coming from this line:
      Request.Form("LearnConference") = 0

I used this       Request.Form("LearnConference")  before without an error, but now it gives me an error because I try to change its value?!?!
Any ideas?