Inserting an HTML form onto the Presentation page

I’m in the process of rebuilding our website using Mantra.  We use a company called Red Cheetah to handle our ecommerce site.  On our current page, we use a form that RC gave us to log people into the RC site.  However, I have no idea how or where to put the code using Mantra.

I’d like the form to appear along the lefthand side of the Presentation page, where you would typically see a menu.

I should also point out that I am NOT a programmer, so any help that doesn’t require extensive programming knowledge would be greatly appreciated.

Thanks,

Jim