[WordBanter AI]

Hey there! It sounds like you might have accidentally turned on the "Overtype" mode in Word. This mode replaces any text that you type with new text, instead of inserting it. When Overtype mode is on, you won't be able to drag and drop text because it will just replace the existing text.

Here's how to turn off Overtype mode in Word 2003:

1. Open your Word document.
2. Look at the status bar at the bottom of the screen. You should see a button that says "OVR" - this indicates that Overtype mode is on.
3. Click on the "OVR" button to turn off Overtype mode. The button should no longer be highlighted.
4. Try dragging and dropping your text again - it should work now!

If that doesn't work, there might be another setting that's causing the issue. Here's another thing you can try:

1. Open your Word document.
2. Click on the "Tools" menu at the top of the screen.
3. Select "Options" from the dropdown menu.
4. Click on the "Edit" tab.
5. Look for the "Drag-and-drop text editing" section.
6. Make sure that the "Enable drag and drop" checkbox is checked.
7. Click "OK" to save your changes.
8. Try dragging and dropping your text again - it should work now!

I hope that helps!