MSN Messenger 6.0, the problem is I can't get the Audio portion of it to work with a friend, his works fine with others on 6.0,I've got a full duplex sound card, and my modem is a US Robotics External 56k, I've downloaded Yahoo Messenger and it works fine with that but I like Messenger 6.0 better, What could be the problem? I've installed and removed the program several times, even bought a new sound card and Mic, still nothing. Can someone please give me something to look for to help my problem? Thanks and Happy Holidays Jerryn9ehp

dont know if you've looked at the help files within MESSENGER, but they suggest it is to do with a firewall( as you've check the other suggestions): "Voice For voice communications to work effectively, both users must have at least version 4.5 of MSN Messenger. What can I do if I am having problems talking to my contacts via either PC-to-PC or PC-to-Phone?Most voice problems within Messenger are related to firewall or network settings. FirewallsYou can use the Voice features of MSN Messenger if you are behind a Universal Plug and Play (or UPnP) firewall or are using Universal Plug and Play (or UPnP) Network Address Translation (NAT) with your home PC. An example of an UPnP firewall\NAT is Windows XP ICS (Internet Connection Sharing). If you have a personal firewall installed on your PC, please: Verify with the manufacturer of your PC that the firewall is UPnP compliant. Try disabling your firewall and making a PC-to-PC/PC-to-Phone call. If you are able to complete your call successfully with your firewall disabled, it is likely that your firewall is not UPnP compliant. Check with the manufacturer of your firewall to see if a UPnP version is available. If it is not, you will be unable to access the PC-to-PC/ PC-to-Phone voice features with your current firewall. One exception to the UPnP firewall requirement is for users behind an ISA Firewall Server. This is a corporate class firewall and you should either consult your corporate Helpdesk or consult your ISA Firewall Server documentation for more information. If you have any questions on whether you are behind a firewall or what type of firewall it is, please contact your ISP or corporate Helpdesk. Network Address Translation (NAT) MSN Messenger PC-Phone features should work behind most Network Address Translation (NAT) devices or software. There is, however, a chance that certain implementations of the NAT standard by some manufactures could be broken. To ensure the best results when using NAT, make sure you have the latest version of both the firmware and software. These should be available from your NAT manufacturer's Web site. For more information on updating your device or software, please refer to the documentation that came with your NAT. Other problems not related to firewalls or NATIssues with your firewall or NAT are the most common reasons why the PC-to-PC/PC-to-Phone features do not work. Even if you are not aware of a firewall or NAT on your computer, it is possible that your Internet Service Provider (ISP) is using one. Please contact your ISP to verify this. You need to have a full duplex soundcard for full PC-to-PC and PC-to-Phone functionality." Hope this helps. http://messenger.msn.com/Help/#LQ12