Hi and welcome to linux and slackware. If you haven't already seen it, here's shilo's slackware guide: http://shilo.is-a-geek.com/slack/
- this is very cool.
resolution: (I like jed for an editor- you can use something else)
# jed /etc/X11/xorg.conf
it's under the screen secton, fairly far down.
check out shilo's guide for sound-
umm... google- for mount- you need to find out how to mount- or navegate using the command line- it's online, you'll find it.