If you have a paypal account you are pretty much all set. There is an area that you can send an invoice to some ones email address. So basically you create an invoice for your rental for what ever amount at the time. Send it off and all the renter has to do is click pay now in there email and give a credit card number. The only thing is that if you use paypal you must add at least 3% to your rental price to cover paypal fees and if you withdraw the money you may have to take extra steps to take more than $500 out at a time.....just verification type stuff. Its pretty easy and painless, my last rental we used paypal and it worked out great. Good Luck....
Brownie