ASP.NET validator Control problem

I am using ASP.NET 2.0
I have two text boxes on form. One for quantity & other for amount and want to use ASP.NET validator controls.
I want in quantity textbox user must enter a positive integer number which is greater than zero but not floating point number.
In amount text box user must enter a positive number which is greater than zero and either be an integer number or a floating point number no problem.
 Please guide me how I can do this with ASP.NET validator controls.
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