soundmodem

[Luis EB1IUG]

Can anyone give me information about how to configure my soundcard as a sound
modem of packet radio? 
I'm using Redhat 6.0 and my soundcard is a SoundBlaster PCI64V.
I have read the AX25 how-to, but i didn't understand it well.
If you can, please give me sinple instructions to configure it and use it to
make a BBS.

73, EB1IUG