The sound on my computer is fine, everything works, sound recorder tests O.K.; the problem comes in when I try to use Net Meeting or MSN Instant Messenger Audiow with a friend of mine. I cannot hear her talking to me, nor can she hear me talking to her. We were able to use Net Meeting some months back, before we networked our computers. Our LinkSys router has a built-in firewall and I understand that may be a problem. Does anyone have any ideas on how I can get the sound to transmit and receive? I have no problem with the video working. (My OS is Windows 98 2nd ed)