I want to wrap the Simple Checkout process in an iFrame on my website -- the code is very simple, although I was told by Authorize.net support that this isn't possible.  Not sure why it wouldn't be possible. 

So, (1) is it possibe (I can't imagine why not, and (2) if it is possible, what are the PCI implications, if any?  Should I activate SSL on my page just be be safe?

Thanks!!