The SysManSMS Server works very well with Virtual Windows products like Hyper-V, VMWare and other. To connect the GSM Modem in a safe way, you should use a Serial-over-IP solution. With this you place a box with LAN and Serial connections where you like, and then you just install a driver on the Virtual PC to get a COM port for the GSM Modem. The most critical fail situation, where the LAN breaks, is taken care of with the SysManSMS Modem Watchdog. The Watchdog will let you know by sending out SMS alerts on its own.