Mobile Stream’s USB Modem software has been updated. The application allows the Treo or Centro to operate as a USB modem for your desktop or laptop computer. The program offers support for Windows 2000/XP/Vista, Mac OS X and Linux operating systems. Recent updates include support for the GSM Palm Centro, compatibility with Windows Vista 64-bit and a fix to the built in DUN suppression on the Treo 680 & 755p.