Edit the colin in the browse window of the site
 

Their is are 2 colins "::" that display in the the browser window displays of the site that tell what page I am at

Your Company Name :: Checkout :: etc.

how can i take those colins?

customer/home.tpl...the title tag.

ifame
 

I have another question do you how I can integrate an Iframe with my cart.
Where can I place this? And what areas can I place it, header, body, footer?

Ex.
<iframe src="firstpage.html" name="myspot" width="100%" height="700">
displays input data
</iframe>

Iframes are not recommended for a number of reasons. You would be better making a scrolling <div>

How do you make a scrolling div