Text Replacement in HTML*Input box

[VeRiTaS]

Hi All, Im wondering how i can have a macro that will replace a set of numbers in a html document or text file when i type the new digits into a input box on a dialog and then save the new edited document overwriting the old one.

I need a Dialog with 2 inputs boxes, 1 for searching the old digits when typed in and another for the new digits which must reaplace the old ones and save the edited document.

Would anyone kindly help me.

Thanks