Doing away with an Input box - how to change this code?

I'm wanting to export a range of cells to a text file. There's a guide how to do this on the Microsoft Website...

http://support.microsoft.com/kb/291296

It works fine, except it's a little tiring having to input the filename & path each time. I'd rather have a cell on the active worksheet (that I wish to export from) setup with a filename...& use that cell value rather than have the input box popup.

I've tried a few permutations, but can't get it to work!

How can I modify the MS code (below), to rid me of the input box & just use file name taken from the contents of a nominated cell - for example if cell b:27 has the filename C:\1.TXT in it, the macro will then export the cells with that name.

(I've only extracted the bits from their code that appoly to opening & creating the filename)

   ' Dimension all variables.
   Dim DestFile As String
   Dim FileNum As Integer
   Dim ColumnCount As Integer
   Dim RowCount As Integer

   ' Prompt user for destination file name.
   DestFile = InputBox("Enter the destination filename" _
      & Chr(10) & "(with complete path):", "Quote-Comma Exporter")

   ' Obtain next free file handle number.
   FileNum = FreeFile()

   ' Turn error checking off.
   On Error Resume Next

   ' Attempt to open destination file for output.
   Open DestFile For Output As #FileNum

   ' If an error occurs report it and end.
   If Err <> 0 Then
      MsgBox "Cannot open filename " & DestFile
      End
   End If

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