> marvelous explanation! if i had learnt something about computers > before using them, i could maybe write something like that one day! Just to make things clear: I'm not a computer scientist, and I don't claim to be one, just a self-taught hacker. Maybe it's just a matter of getting used to the jargon to be able to write something like that. Theoretically, I'm still a physiscts. Cheers, Ulrik.