Open the report in design view.
Click the Properties button so that the Properties box is open and ready.
The white drop-down box (shows the tool-tip Object) when you hover on it) is
usually just under the word File on the menu bar in the report's Design
View.
All the controls, lines, text boxes, etc in the report are listed there.
Look for the text box's name in the Object box. As soon as you click on it
there, it will be selected even if it is too small for you to see. When you
look at the Properties box you will see its name on the bar at the top.
You can then change it's height and width typing say 3cm height and width
into the Property box so you can see it. You can also check it's Control
Source to see what job it does.
Evi