Marketpress shopping cart not displaying on shopping cart page

I did not see an option for paypal standard in payment options...which is what I prefer to use. I selected Paypal express and changed it in my Paypal account. Then i entered API info. When I add an item to my cart, it appears in the sidebar widget...then I select checkout and it takes me to the shopping cart page (although there is not really a page) under the store page. This page is blank. There is no cart on it and no checkout option. What I really want is to have the widget checkout link go straight to paypal and use paypal standard payments. Is that possible?