>Do you remember the API call to force a textbox to accept numerical values only?
>
>-OR-
>
>What is your best/favorite way of dealing with numerical entries (other than buying FarPoint's Input Pro and the like)?

No API needed simply kill the key stroke before its updated like so. Add a text box named txtYourText or rename the code below.

Private Sub TxtYourText_KeyPress(KeyAscii As Integer)
    'Numbers only
    If KeyAscii < 48 Or KeyAscii > 57 Then KeyAscii = 0 ' numbers
    'Text only (Uncomment both to allow text and numbers)
    'If KeyAscii < 65 Or KeyAscii > 122 Then KeyAscii = 0 'letters
End Sub

HTH