I found this today and maybe some of you already know about this. I use Paypal Virtual terminal but when you access Paypal on your mobile device you can't get into that portion to process transactions.
I found Mobile Merchant Pro today, which is totally free and links to my Paypal Payments Pro (Business account with virtual terminal). Now if I am out and someone wants to buy merchandise - BOOM! - Just pull out the Droid and process the transaction with their card.