My co-worker found this code for VB.net that is used to access selected items from check boxes or multiple select boxes. If you've been wondering how to do this, this may help :)

The URL is http://dotnetjunkies.com/weblog/davetrux/archive/2003/11/14/3557.aspx

// The results of a mulitple-select list are also a NameValueCollection
Request.Form.GetValues(i)
// and the individual items are accessed like this:
Request.Form.GetValues(i)(j)

In order to utilize this, I would recommend reading the article located at sitepoint.com (Search google for modified preorder tree traversal). It took me quite some time and some help from a coworker to port this from PHP to VB.net. :D

Replace the application("sql").query("*") with your SQL code, I was inclined to write my own SQL class to make querying DB's easier, but you can do whatever you want.

record = application("sql").query("select * from categories order by lft asc")
dim output as new arraylist()
dim right as new arraylist()
do while not record.eof
  if right.count > 0
    do while right(right.count - 1) < record("rgt").value
      right.removeAt(right.count - 1)
      if right.count = 0 then exit do
    loop
  end if
  response.write(record("name").value & " is " & right.count & " levels deep in the tree..." & controlchars.cr)
  right.add(record("rgt").value)
  record.movenext
loop