I am planning on buying an audio interface to record some guitar/bass "dry" and then apply effects/amplification in software like Waves GTR. Not looking for professional quality, just something to create a listenable demo with. I have a few questions that I hope you guys can answer. I'm a complete newbie. 1) Some audio interfaces have a 1/4" instrument input jack, others only have an XLR input jack. How do I connect a guitar to an XLR input jack? 2) DI boxes, preamps. Where do these come in and do I really need one? What do they do exactly? 3) Since I am going to use software-amplification, does the input quality really need to be that good? This might be a stupid question but I'm assuming that since the biggest part of the sound is created software-side, that it shouldn't need very high input quality to create decent sound. Is that correct? 4) Is a USB interface best or should I get one that plugs into the mic-input on my laptop? I appreciate all answers Please keep it as simple as possible, tell me only what I need to know.