downloaded BETTER KEYBOARD, but I'm not sure I did it right

Hi, new member here... thanks for any help you can render. I bought and downloaded Better Keyboard and enabled it & then I believe I activated it on my htc hero.. However, I don't notice anything that looks different when I go to enter text. Should it still look the same as it did before?

Also, it doesn't seem to function any differently either... still having typos a lot (for example I meant to type 'where to' and I found 'Theresa').

Thx