Create Paypal Sandbox in Magento

I have Magento dev environment. I need Paypal developer account set up and Paypal in Magento configured for sandbox testing. Paypal express checkout and Gateway methods should be working with test credit cards. Once work is completed, test customer should be able to checkout from website, using either Paypal Express or any of the Gateway (remote settlement) methods. ## Deliverables * * *This broadcast message was sent to all bidders on Monday Feb 14, 2011 2:57:02 PM: Hi all, Thanks for your bids. There's a slight change in project description. Payment method that will be used for testing is only Paypal Express Checkout. So, the website should be able to accept test orders using PayPal Express Checkout, in sandbox mode ofc. Please revise your bids if you think necessary. Regards, Srdjan