You can accomplish this by using the proper escape sequence. If you insert & nbsp ; in place of each space characters you will be allowed to save those fields.
Please note that I had to inserts spaces between the & and the nbsp and the ; due to the way the message board renders HTML content. In real world use it should look like the attached screen shot.
Once you save your changes you will notice that the text boxes are re-formatted with the spaces you originally wanted. This means that if you need to update the values in the future you must re-insert all the & nbsp ; sequences again before updating.
