VS 2008 Play an audio file over a voice modem

Hi,

I've got an app that is an alarm handler, so when an alarm goes off, it indicates on the screen etc.

I'd like to dial up to a telephone line and announce the alarm to the person receiving the call.

I've got a SpeechSynthesizer saying the alarm through the speakers. I've read some places going to a voice modem via the soundcard - is there a better method?

Thanks in advance,

Aaron.