Apparently I had a reply on Tuesday but it fell into my spam folder. Here is the response from Walmart Corporation:
"From: Walmart Customer Service <firstname.lastname@example.org>
Subject: Response from Wal-Mart Stores, Inc. (Ref #000000025510386)
Date: Tuesday, June 15, 2010, 4:39 PM
Thank you for your message.
Dear Xxxx Xxxxxx,
There is no policy against customers carrying their handgun in our stores as long as he/she is legally permitted by their state to carry the handgun.
As a private property owner, Walmart has the authority to ask customers to remove their handgun or leave the store on a case-by-case basis if customers or Walmart associates express concerns about the handgun.
Walmart Customer Care
For further correspondence regarding this issue, please reply to this email."
I read this as I can carry IN any time I want but I must leave if any customer or employee "express concerns" and it is handled on a case-by-case basis.
Time to go shopping