hi, i need every one help me!!
i am fresh in programming, but a few qs wanna to ask fr u all.

1. what is COM(component object model)?
2. how the COM used? is it used with vb or ms sql?
3. i used vb in web server. but how to connect to ms sql?what command need to type in?
4. what is DLL?how to create this DLL file?

i hope someone can help me...thank you!!