c# LDAP Nested Group user List

[Vikram]

Hi, Can any give me an example which collects all the users of a given
group.
Im on Win2000 domain, using c#.

Currently my code below gives me only users directly in the group and
not in nested group.
DirectorySearch er searcher = new DirectorySearch er();
DirectoryEntry ContextEntry = new
DirectoryEntry( "LDAP://machine/DC=machine,DC=l ocal"
searcher.Search Root = ContextEntry;
foreach(System. DirectoryServic es.SearchResult resEnt in
searcher.FindAl l())
{
ResultPropertyC ollection resultPropColle ction = resEnt.Properti es;

if(null != resultPropColle ction["member"])
{
foreach( object MemberCollectio n in resultPropColle ction["member"])
{
DirectoryEntry gpMemberEntry = new DirectoryEntry( "LDAP://machine/"
+ MemberCollectio n);
System.Director yServices.Prope rtyCollection userProps =
gpMemberEntry.P roperties;
object obVal = userProps["cn"].Value;
if (null != obVal)
{
groupMemebers.A dd(obVal.ToStri ng());
}
}
}
}

Thanks for your reply.