Hi,<BR><BR>I am currently using a two-column DataTable to store an editable list of id&#039;s and names, for eventual insertion into an Access DB table. It has occurred to me that I could probably achieve the same add/remove/store functionality with some kind of collection object, probably a Hashtable.<BR><BR>I was wondering if there were any considerations (eg load on server memory etc) which could influence my choice of DataTable or a Hashtable - or does it make no difference which I use?<BR><BR>Thanks,<BR><BR>JON