Help! with a PDF document

[badger]

So I am making a claim for a friend of mine who consistently fed his cat one of the tainted pet foods and lost her in the space of two days in the summer of 2006. She had a terrible death. It's hard to say if the food was to blame, but I'm going on the assumption that it at least played a part.

So the law firm that's handling this payout sent me forms to fill out, which I planned to send back to them by email since the deadline is midnight tonight. Now I find that the form won't take text! Or at least I can't set it up to take text. Help! I know so little about Adobe and their support site is useless.

I'm running Adobe Reader 9, if that helps.