How to dock forms

I had 3 forms, they are: Main.vb, form1.vb and form2.vb.. I need to dock my forms (form1 and form2 to main.vb) .. how to deal with this? .. I need advice, thanks a lot in advance

Regards
Winanjaya

What do you mean by "dock forms"? Do you have three forms open at the same time and want them displayed next to each other in a certain arrangement?

Kind of a cheap way of doing it, but I know no other. I use a timer control and have it move the other forms when the main form is moved to the correct positions.