So, I currently look into the Amplitude, Guitar rig etc. software packages. The question is: how do I hook up the guitar to the computer? Up to now, I used a Digitech modeler, and went analog into the mic in of my mac. Now, for a software based modeler, do I need a DI box? Or a high quality preamp? Where is the signal converted from analog to digital? I am curious how you guys are doing this. Thanks in advance for any insight!