Horrible Freezing!!? Pls, any help!

[ArrfenWoof]

Hello, I have XP SP3, and a new magicjack(just bought today). Well, when someone calls me, I pick up the phone, and it freezes my computer (to the point of me not being able to move my mouse), and I hear nothing coming through the phone... After about 40 seconds, it finally unfreezes the computer, and by then, the other party has hung up. I am curious what is wrong? Also, when I dial a number, on the last digit... It takes 5 seconds for the number to actually start to try to connect... The PC is fairly new USB 2.0, 2.4GHZ, 1GB ram... I would think this would be sufficient? I have no applications running either... A bit strange that it would freeze so bad? Any help would be appreciated. THANK YOU!

Also, I just noticed that when someone calls me, or I call them... I can hear them EXCELLENT, but they cannot hear my at all. I've tried different phones, and different telephone lines.