Magento

I am running Magento ver. 1.5.1.0.
I am using Website Payments Standard.
Under the Paypal settings in Magento, there is no place to enter the business name (even though all the documentation I can find has a field for business name, mine doesn’t have that field)
When I go to check out through paypal, it puts my email address as the store name. (this is the email address setup under the merchant account setting in the field labeled “Email Associated with PayPal Merchant Account")

Is this something that is broke in 1.5.1.0, or is there some setting that is preventing me from entering a business name?