[vb] - Make this shorter?

Can i make this shorter?

VB Code:

Private Sub OK_Click()
Sheets("Details").Activate
If IsEmpty(Range("B2")) Then
    Row = 2
Else
    Row = Range("B1").End(xlDown).Row + 1
End If
Cells(Row, 1) = txtFor.Text
 
If IsEmpty(Range("C2")) Then
    Row = 2
Else
    Row = Range("C1").End(xlDown).Row + 1
End If
Cells(Row, 2) = txtSur.Text
 
If IsEmpty(Range("D2")) Then
    Row = 2
Else
    Row = Range("D1").End(xlDown).Row + 1
End If
Cells(Row, 3) = txtAge.Value
 
If IsEmpty(Range("E2")) Then
    Row = 2
Else
    Row = Range("E1").End(xlDown).Row + 1
End If
Cells(Row, 4) = txtMob.Value
 
If IsEmpty(Range("F2")) Then
    Row = 2
Else
    Row = Range("F1").End(xlDown).Row + 1
End If
Cells(Row, 5) = txtHom.Value
 
 
Unload Me
 
End Sub
 
'new sub
 
Private Sub txtAge_KeyPress(ByVal KeyAscii As MSForms.ReturnInteger)
 
If KeyAscii <> 8 And KeyAscii < 48 Or KeyAscii > 57 Then
KeyAscii = 0
End If
 
End Sub
 
'new sub
 
Private Sub txtMob_KeyPress(ByVal KeyAscii As MSForms.ReturnInteger)
 
If KeyAscii <> 8 And KeyAscii < 48 Or KeyAscii > 57 Then
KeyAscii = 0
End If
 
End Sub
 
'new sub
 
Private Sub txtHom_KeyPress(ByVal KeyAscii As MSForms.ReturnInteger)
 
If KeyAscii <> 8 And KeyAscii < 48 Or KeyAscii > 57 Then
KeyAscii = 0
End If
 
End Sub
 
'new sub
 
Private Sub txtSur_KeyPress(ByVal KeyAscii As MSForms.ReturnInteger)
 
If KeyAscii <> 8 And KeyAscii < 65 Or KeyAscii > 90 Then
KeyAscii = 0
End If
 
End Sub
 
'new sub
 
Private Sub txtFor_KeyPress(ByVal KeyAscii As MSForms.ReturnInteger)
 
If KeyAscii <> 8 And KeyAscii < 65 Or KeyAscii > 90 Then
KeyAscii = 0
End If
 
End Sub

You can place the KeyAscii test in a separate function and just call this function.
Saves you two lines per on_key function.

You can also make the main part shorter, but at a rather heavy speed impact, and I don't think it's worth it unless it's likey that more columns get added.