Thanks a lot for your insight.

Going back to your initial proposal, I wondered if it could simplified
a bit, because it seems like it runs through the entire mytable twice
(first at the "mytable.Rows.Find(findthesevals) and later in the
For.....Next loop. How about something like this (in this case inside a
page_load sub):

Dim foundRow As DataRow
Dim irecord as integer
Dim i As Integer
Dim iRowIndex As Integer

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
    If Not Page.IsPostBack Then 'The first time the page is accessed
        Session("irecord") = Request.QueryString("id") 'Just for the sake of
this example
        For i = 0 To myTable.Rows.Count - 1
            If myTable.Rows(i).item("ID") = irecord Then
                foundrow = mytable.rows(i)
                          iRowIndex = i
                Session("iRowIndex") = irowIndex
                   Exit For
                  End If
        Next i
    Else
           irecord = Session("irecord")

       End If
       filltable() 'referrring to a sub where the table is populated
with foundrow content
End Sub

On the page there could be two buttons for navigating back and forward.
This would be the associated code:

Private Sub btnPrevious_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnPrevious.Click
if irowIndex <> 0 then
    Session("irowIndex") = Session("irowIndex") - 1
    foundrow = mytable.Rows(Session("irowIndex"))
    filltable()
end sub

Private Sub btnNext_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnPrevious.Click
if irowIndex <> (mytable.Rows.Count - 1) then
    Session("irowIndex") = Session("irowIndex") + 1
    foundrow = mytable.Rows(Session("irowIndex"))
    filltable()   
end sub

Please let me know what you think.