Differences between a class and a component class???

[Daniel]

Basically I want to create a data access dll that will be referenced and
used in multiple projects. When I go to create a new class it asks what
type of class should I use?

 

[James]

The difference is that a class becomes a component when
it implements the IComponent interface.

 

[Armin Zingler]

Basically I want to create a data access dll that will be referenced
and used in multiple projects. When I go to create a new class it
asks what type of class should I use?

http://msdn.microsoft.com/library/en-us/cpguide/html/cpconcomponentprogrammingessentials.asp
especially sub topic "class vs. component vs.control"

also:
http://msdn.microsoft.com/library/en-us/vbcon/html/vbconComponentCreation.asp