I've been to many MIDI sites - all far too in-depth and confusing, so I'm going to ask the experts here.
Here's the background ...
I have some MIDI files. I have a program which will play them (GuitarPro) and a computer with XP and bog-standard soundcard (RealTek HD). Sounds are horrible, to put it mildly.
... and here's the question I need a really straightforward answer to ...
What do I need to get decent sound from these files?
If I might suggest just a brief list for starters, something like:
.decent external sound card (optional suggestion - blah blah)
.decent speakers (optional suggestion - blah blah)
.ASIO drivers (available here - http:\blah blah)
.any other software/hardware/knowledge/suggestions/tips
.a look at this simple tutorial to make it all work (http:\blah blah)
I'm suggesting that kind of approach because I'm (pretty) sure I can't be the only one who would benefit from this info

so may as well get the info as complete as possible in one place.
Many thanks!