I am interested in buying this module, but am a little leary because I can't get ahold of anyone at presto-changeo. I tried contacting them a few weeks ago with some questions I had, and I never heard back. I tried a second time today, and got a error message saying my inquiry was not deliverable. I am concerned that I will purchase the module and not have access to any support from them. Also, I am not ready to purchase until I can get some answers about the module. Don't want to waste money on something that won't work for me. Anyone have any ideas on what to do from here?