Hi, I have just installed zen into a wordpress site. I am having issues trying to get into the correct html editor. I am self taught, so I get confused easily...my version is this;
Zen Cart 1.3.9h

Database Patch Level: 1.3.9h

v1.3.9h [2011-11-18 14:51:19] (Fresh Installation)
v1.3.9h [2011-11-18 14:51:19] (Fresh Installation)

when I try to get to the file

includes/languages/english/custom/header.php

it takes me to the wordpress template instead of staying in shopping cart, what does this follow?

this is where I tried to find it

http://www.crankedupgear.com/storefront/zc_admin/

but when I paste the line after that it says error

403 Permission Denied

You do not have permission for this request /storefront/zc_admin/includes/languages/english/custom/header.php

I am also trying to find a way to add a drop down box for sizes and prices of t-shirts.

thanks!