1)Is it a must to create both the property and methods in the

classes....if i does not uses property often....

can i just declare it inside the form and put all methods

separately to the classes...
Property is just a setter/getter function. You could and could not create your own property. Sample to this functions are the ones in Java. Something that looks like this
Code:
function getSomething() varialbe_type
return variable
end function

sub setSomething(something)
me.variable=something
end sub
2)Can i say that class is somehow act like the function procedure

as it can return the values except that it could be shared to all

forms if i put it in classes....
Class is not a function but a structure with a twist. A structure that has function and variables inside it. What's good about classes is the oop feature that can extend it's capability to another class. The one we know about inheritance.

3) Lastly, how to declare one or multiple classes that i need to

the various forms... I am not sure where the Inherits

should be place... is it

coding:
VB Code:
  1. Public Class Sample

  2.     Inherits System.Windows.Forms.Form 

  3.     Inherits Class1, Class2

Thanks
There is no multiple inheritance in .NET aside from C++. Dunno about any languages if they support multiple inheritance. You can do multiple inheritance by creating an interface and implements it on your class. Something like this
Code:
public class Sample
inherits Class1
implements Interface1

. . . 
end class

public Class1
. . .
enc class

public interface Interface1
Sub DoThis()
Function DoThis2() as variable_type
enc interface
From there, your class Sample have the feature from Class1 and the functionality of your interface.

Dunno if this helps.