Entering numbers is a little weird (IMHO). Does it help to select the entire field when the control gets focus? Other question I'd have is: is the field bound? To a table field or view field? I do suggest using a inputMask of 999999999.99. Is that what you tried?

>No - it's numeric(12,2)
>>Is it possible that the controlsource is a defined as numeric(2,0)?
>>
>>>I have a text field (numeric data) in a grid with no format or input mask (but have tried these). When the user tabs onto the field and types 123 the 1 is briefly entered and then the 23 is entered to the left and overwrites the 1.