Thanks everybody for the replies. Several issues were clarified
reading the older threads.

I have a question to all of you: Are you using some special software
for archiving the messages? All of you often come up with links to very
specific threads. How do you do it? Do you have your own database, in
which you record the URL's with some keywords, is there a front end
which allows management of information such as this? Or is it simply
that you use smarter searches?

Thanks anyway,
Kostis Vezerides