you have to make the FormatNumber function in the general portion of the 
page and make it FormatNumber(strinput,2)

then, in the grid, go to properties and find the field that you want to 
format. lets say that your field's name is "product"..
you would restate the field to read =FormatNumber([product]) in the drid 
dtc under the data tab. the header doesn't matter.