Hi Jkirkpatrick
Login to your administration page and go to modify categories:
Main page :: Categories Management
Select the category / subcategory that you wish to give a description to and then press the MODIFY button:
Main page :: Categories Management :: Modify Category
Enter your description in the description area. You can use HTML here to improve the look / style and even embed pictures and links to other areas.
The position field defines what position the category is displayed in the cart (lower numbers are displayed higher up)
Don't forget to press the save button.
All information entered here is stored in the database.
Regards
Ing. Stephen Hatton