App only works over same wi-fi connection.

Device - Samsung Acclaim (U.S. Cellular)
Device OS version - uhh Firmware version 2.1-update 1
Computer OS version - Windows 7 Home Premium
App version - 1.1.108
Connection method - Discovered
Environment of the remote PC - Home

As previously stated, my phone will only connect to my PC over the same wi-fi connection, rendering this app useless to me.