Listbox Controls

[Eelyak]

classic vb6/asp perp here but have a asp.net
issue i am having. it boils down to this. 2 listbox with --> buttons
and <---
to move entry's back and forth. its an attendance sheet. the
..value="(studentID)" when i move them --> html source looks fine..
[Listbox1]
option selected="selected" value="92">Pete CxxxXXun</option>
[Listbox2]
<option value="94">Pete CXXxoun</option>

i click my test "Save" button routine
Response.Write(lb2.Items(i).Value & " <br />")
shows "94". All worked fine

now..
lb1 can have around 20 kids in it, so.. if i select 10 and --> then
view source all appears normal, hit "Save" output is fine. if then i
<--- remove one then ---> add another(any) i get[Listbox1]
<option selected="selected" value="90">Hunter BXxXen</option>
[Listbox2]
<option value="90">Ayuk xxXXre</option>
<option value="Hunter BXxxXn">Hunter BrXxXxn</option>

i figure its in my ---> routine

Dim i, x
x = 0
For i = 0 To lb.Items.Count - 1
If lb.Items(i).Selected Then
lb2.Items.Add(lb.Items(i).Text)
lb2.Items.Item(x).Value = lb.Items(i).Value
x = x + 1
End If
Next

Anyone have an idea on how to fix it??