Ok - I talked to hubby and he said that YES you will need to buy a Special DSL Filter (a 6 pin plug) that cost around $30 (plus service fee) and that you should not have to leave your alarm off while on the computer - just that it will not be able to send a signal to the monitoring place if someone was to break in during the time you are online, but the alarm will still sound on your end.

Good Luck.........

LoVe,
Rhapsody -