Sampling Card / Sound Card

[Michael Farr]

<potentially off topic>

I am built a basic software radio modem (IF only at the moment, however it 
wont be hard to make an RF transmitter when I am ready), and am using my 
soundcard as the sampling unit.  The soundcard's sampling unit is slow, the 
sampling frequency is not accurate and it has a huge sample offset between 
left and right channels.  Does anyone know where I can get some kind of PCI 
stereo sampling unit that is both fast accurate and less than $(AU)200?