Creating a Multiple Page Registration Form

Use the Inest Record server behavior - Insert - Application objects - Insert Record - Record Insertion Wizard
If you have a auto number be sure after you make the form to click on it in the Behaviors window and set the column with the auto number to <ignore> or you will get a "tried to assign value error" when testing page.

If you want to capture the input of a form, make sure it is using post and then use this code on the 2nd page

<%
MM_valVariable=CStr(Request.Form("textfield"))
Session("MM_regemail") = MM_valVariable
%>

change "textfield" to what your form uses.the name of the session can be anything you want.something unique (email)
put this code at the start of your page and then make a recordset (rsformreg) that filters the Session Variable - the filter for the above would be MM_regemail. Use the record set to update the record and add more data.
If you want to use the regID number (auto number in access) to make a session variable put this after the recordset created above(this will be unique always)

<%
Session("MM_regnumber") = (rsformreg.Fields.Item("regID").Value)
%>

then on the next pages use the session MM_regnumber to filter the recordset to update more info
look into session variables the are very useful also here is how to destroy the variable after your done using it

<%
Session.Contents.Remove("MM_regnumber")
%>