error 1054 - submit button as db field

[eluser]Rick Blackdog[/eluser]
I'm a n00b so please be gentle...

Just getting used to CI, trying to setup a form that submits to my db, CI seems to be seeing my submit button as a field. How do I stop that?

Code:

A Database Error Occurred
Error Number: 1054

Unknown column 'submit' in 'field list'

INSERT INTO `registrations` (`bookingID`, `firstname`, `lastname`, `email`, `mobile`, `homephone`, `address1`, `address2`, `city`, `postcode`, `newsletter`, `submit`) VALUES ('', 'test', 'person', '[email protected]', '2352345', '2352345', '4 sesame street', '', 'Belfast', 'BT5 5TT', 'on', 'Submit')

Filename: /Applications/MAMP/htdocs/Mobilise/controllers/booking.php

Line Number: 14

[eluser]Rick Blackdog[/eluser]
just discovered it was because I had name="submit" attribute on my submit button, now submitted ok.