Thanks for your sound advice Thomas, thats seems to be to way to go indeed... if only i could figure out which system is most commonly used LOL. Havent seen any website that states which system they are using either well not clearly anyways. Some use several systems mixed up whit eachother also. I think the most sensible thing to do is to find a recent book on the matter and buy that... that, at least, would enable me to use one system and i will be certain of which system that would be :o) So, thats pretty much what you said :o) As for reestablishing an ordering system, i do have a life you know LOL It would probably take many years to do that if not my entire life ;o) The research that would be involved is truly mindblowing... sigh Would be VERY cool though :D Anyways, thanks to you all for the input and have a great day !! :o) Jeroen