How to construct the control name of a Label on a web form at runtime

I want to access forty Label controls in a table on my web page by using a Do Loop (or whatever) to access each Label control in sequence. I know the Label control names are Label1...Label40. How can I 'construct' the Label control name at runtime?

Dim intX, intEnd as Integer
Dim strLabelName As String
intX = 1
intEnd = 40
Do Until intX > intEnd
' contruct Label name
strLabelName = "Label" & Trim(CStr(intX))

strLabelName.Text = "whatever"
intX += 1
Loop

I realize that referring to the .Text using strLabelName won't work, but I don't know how to turn that StrLabelName into the ID (or whatever) for a Label control on the web form.

HELP !!! (and thanks a bunch)