I am new to CSS i used to do everything with HTML, and this is my situation, i set my site up well and the format was perfect. I then put a form on the maincol to do some DB testing and after the form went up, my positioning is out of whack. My right col is now to the left of my main col and thats so far right its off the screen and my left col is to the left of the footer.

Can some one help me, it would be greatly appreciated, Thank you.