Yes, you can do that too. First, make sure you have the toolbars you need
available. Click View/Toolbars/Visual Basic from Excel's menu bar in order
to display the Visual Basic toolbar. Next, go to the sheet you want to
locate the TextBox on, then click the Toolbox Control icon on the Visual
Basic toolbar (it looks like a hammer and wrench crossing each other);
select the TextBox icon (a rectangle with 'ab' inside) and then draw the
TextBox onto the worksheet. Next, right click the TextBox and select
Properties from the popup menu that is displayed; and type your sheet/cell
reference into the LinkedCell property on the Properties window that was
displayed (for example, Sheet1!A1 for cell A1 on Sheet1). Now, close the
Properties window and click both the Toolbox toolbar icon and Design Mode
icon (its icon looks like a triangle, ruler and pencil), which got turned on
when you displayed the Properties window, on the Visual Basic toolbar (the
two icons should not be highlighted when you are done). Okay, now anything
you type in the cell you referenced in the LinkedCell property will be
displayed in the TextBox AND, conversely, anything you type in the TextBox
will be displayed in the linked cell.
Rick