some keys on the right side of the keyboard not working

The enter, right shift, directional arrow keys and right bracket keys have just stopped functioning. I havnt spilt anything on the macbook and was just wondering what this problem might be. I took the enter key off and cleaned but it made no difference. If i can't fix this is there anyway that I can reasign keys? I only really need the enter although of course the others are useful too.

You neglected to give us any specifics about which Mac notebook you have. However, it's probably best to replace the keyboard rather than try to reassign keys. And, it's likely that if the keyboard is developing problems, other keys will start to fail.

Regards.