Leanne
If a "group" of controls (text boxes) all behave the same when you try to
alter one, there's a chance they've been set as a "group". Click on one of
the text boxes, then check Format on the menu to see if you have "Group" or
"Ungroup".
Another possibility might be that you are working on a datasheet form,
rather than a single form or continuous form. That's one of the properties
of the form itself.
Regards
Jeff Boyce
Microsoft Office/Access MVP