Rapidshare 2005 Rose Bowl Can Anyone Tell Me How To Add Numbers Inside A Listbox For Visualbasic 2005 Or Later 08?

Can anyone tell me how to add numbers inside a listbox for visualbasic 2005 or later 08? - rapidshare 2005 rose bowl

I have a list of several numbers in a list box when you press a button to be added the sum of all the problems and meet the average. Today the problem is that I make an exception only have the numbers of more than 50 years are. He is a university assignment, I can use it to top
Looping or not all this will help?

I downloaded this link to rapidshare? thats how it should be my teacher has given us. exe, that we must find the code for you?
http://rapidshare.com/files/133210595/fo ...