Hi Carolyn,
There are a couple of options:
1) You can set up an item details profile which contains the store window html. Then, when you load this profile, the store window html will be loaded into the description html and you can just type your item description above it so the store window appears at the bottm.
2) you can create a custom template from one of our existing templates and place the [STORE_WINDOW] tag at the bottom of the template. To do this, go to Auctiva -> Listings(tab) -> Manage(Custom Templates) and click the "Create from Existing" button. Then, select which template you'd liek to modify and click "Create". Then, name the template and place "[STORE_WINDOW]" at the bottom of the template html and save. When you use this template, by locating it under "Other" in the template library, the store window will be automatically placed at the bottom where you placed the [STORE_WINDOW] tag.
I hope this helps=)
-Mike