Visual Basic- StartingHelp?

Visual Basic - Change Machine?
Ok How do I make my program execute change. For example, if I have 3 text boxes with Amount of Purchase, Amount Tendered, and Change Due. And then 9 check boxes with 20,10,5,1, Dollars,Dimes,Nickels, Pennies and a label box corresponding to each one, and a Calculate Button,how do I make this work?

Ok so i Dont know where to start? I just need a starting point.

For Private Sub BtnCalculate Click(....
If Chktwenty.Checked=False then
---->intTwenty=intchange\2000
---->intChange=intChangeMod2000
lblTwenty=intTwenty

is that right to have the number of 20s given back appear in the label box next to 20?

sure you can do it that way.. but you will need to make sure you are getting the floor of the change/2000... or you can use a series of while loops..

while intchange >= 2000
{
intchange-= 2000
intTwenty+=1
}

while intchange >= 1000
{
intchange-= 1000
intTens+=1
}

while intchange >= 500
{
intchange-= 500
intfives+=1
}

while intchange >= 100
{
intchange-= 100
intones +=1
}
---- etc ---

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