Well...welcome to the world of poverty...
Tracking is really dependent on the room. Here's a couple of links to help you understand more about acoustically treating a room.
http://www.gikacoustics.com/education.html
and
http://www.realtraps.com/info.htm
When I first got going, I didn't have a very good sounding room and was puzzled why my mixes didn't translate worth a damn on other systems. I'd get em sounding good in my room and they'd sound like ass everywhere else.
Second in importance (imho) is the monitors. You can't fix what you can't hear. The monitors and the room go hand in hand (also imho)
As to the computer route, I have no clue. I don't use one. But doing a search will get you the answers you need.
As to the drums, what I use is a Shure Beta 52 on kick (also an AKG D112 at times), a shure sm57 or Audix I5 on snare and a pair of Shure KSM 109's on Overheads. I use the "Recorderman Technique". Search that as well. It's a pretty damn good mic placement setup that captures the whole kit rather well. I'll use this setup and then close mic toms or whatever to taste.
The bass can be DI'd or miked with either the Beta 52 or the D112. Or maybe do both and blend to taste.
The guitar cabs can be miked with the 57's. There's other mics that work well but these have been working on cabs and snares for years.
Vocal mics are more of a flavor thing. What works well for your voice may not be so good on another. See if you can try out a few.
My thoughts for you would be to get what you need without breaking the bank...ie mics, preamps, cords, DAW, soundcard hootcher etc...and get to know that system of yours VERY well before you go out and buy the newest piece of gear.
Just my thoughts here and mileage will vary.
Luck to you.......