Jdub

I'm having a problem trying to get this to link to the voipuser.org server; I want to see if the whole thing improves my cheap and hence nasty USB phone box which works well with Skype but has very bad audio for SIP (using X-Lite). Set Skype2sip with username: justinwhite server: voipuser.org (have tried sip.voipuser.org) but whenever I start Uplink get: server voipuser.org did not respond to register (sip:justinwhite@voipuser.org) check server details for that line Any ideas?