Ok, so I decided I should get an account with 2Checkout. I know how to do all the junk with them, the problem is, how should I setup my order page.

www.acidsun.com/order.php is the page. Right now I have it so a user fills out a form (i made it in php and it needs to be changed), and after filling out the form they hit Next Step >> and it automaticlly sends me an email along with sending them to the checkout page (for the hosing plan they ordered).

I need a new, easier way (or any suggestions) on what to do for an order page.