I don't know why you would say it isn't supported since that isn't correct.

In fact you can dynamically create controls on a userform.

From John Walkenbach's site

http://j-walk.com/ss/excel/tips/tip76.htm
Creating a UserForm Programmatically


A simple example:

Private Sub CommandButton1_Click()
Dim tbox As MSForms.TextBox
Set tbox = Controls.Add("Forms.TextBox.1", _
Name:="Textbox5", Visible:=True)
tbox.Top = TextBox1.Top + TextBox1.Height + 10
tbox.Left = TextBox1.Left
tbox.Width = TextBox1.Width
tbox.Height = TextBox1.Height
End Sub

--
Regards,
Tom Ogilvy



"Asif" wrote in message
...
There are 4 text boxes horizontally placed. As soon as the user leaves the
last one, another set of 4 text boxes are created below the original 4 ...
and this continues.

That's how I was envisaging my user form, as I thought it would enhance
the
usablity of the form. And in any case I don't know beforehand how many
such
sets of text boxes the user will need. Now I'm disappointed to know
dynamic
control creation isn't possible in hosted VBA. Is there any alternative
way?

Thanks. ~Asif