How do DLL's work ?

[Zleepy]

If I create a function like this:

Public Function DoStuff()
'Do Some Stuff Here!
End Function

In a Class Module, and then compile it to a DLL, and then if I want to call this dll later on Runtime from my application, and use that function, how do I Do ?

If I have called the DLL, could I just use the command "DoStuff" ?