when they have ask for my model number and the rest of the numbers on the bottom of my computer when i 1st join them close to a year ago they ask me to send these numbers a few times so they could help me. was it wrong for me to send them that information?
It depends on what "numbers" you gave out. The model of the computer is fine to give out to people that are trying to help, but I think it would only help on hardware questions. I wouldn't give out the Windows CD Key license though.
Serial number probably wouldn't be needed by anyone except for whoever made the computer (Dell, HP, Gateway, etc.), so I wouldn't give that info out either. Not really bad if you did, but it's not necessary.