If your looking for a credit card processing app for the BlackBerry, try Mobile Merchant Pro. It's free, and will work with any current Authorize.net or PayPal Web Pro account. You can get all the details, including videos, at their web site: www.1nbcard.com/mmp.
I am looking for a credit card processing application that will work on my Curve 8330. Anybody familiar with the numerous apps available? Are they safe?