The Union Pacific Company Store is a bit intimidating, then strange.
Using the link from
GB's initial post, I found that if I clicked on that "BACK" button, I could then get into the store.
Using the link in his
second posting, I didn't create an account, but found I could see the store's many goodies.
Doing a bit of digging, I found the link
http://www.costore.com/upstore1 seemed to work just fine.
If you google-search for [
"costore.com"], you'll find other places that have their "store" there. Really more of a mall than a store.