You use the propery builder...

I believe under the Column option on the side bar menu is a way to for you to create the colums to your liking

There is a check box at the top that says something to the affect of "automatically generate columns" or something simliar, anyway you want to uncheck that. Then you can create bound columns and fill in the database fields and such. You can also specify a format you want it to look as well.

I don't know that what I described is exact because I don't have the program on this computer, but it is relatively close.