Being that there are so many submission on metal guitar wars that utilize impulses, can someone explain what they do and what they are?

Hey guys I'm pretty new to recording drums, and I plan on recording a 4 or 5 song demo with my band. We've already made a few recordings, with a cheap radioshack mic (haha), these can be heard at http://www.myspace.com/perpetratorthrash

Our band is going to record a demo of the whole album to make sure we like all arrangements, before we go to the studio and go broke.
We steel want it to sound as good as possible.

Looking to upgrade the pickups in my Jackson RR. Have heard for years that for metal there is nothing better or simpler than EMG 81-85. I am looking for the Killswitch Engage tone, dirty and chunky but distinguished. I definitely want passive, I don't like a lot of extra wiring/features. I like the rhythms to be chunky and downright heavy, but won't feedback when you cut the note off.

I've been recording a lot of metal "screamers" in the studio, and I find myself just guessing on EQ levels, and mic placement, and filters, etc.

Can anyone give me a quick rundown on some tips/tricks to recording this?
What frequencies do the "screams" exist at?
Mic suggestion for these vocals?

Hi I'm looking to get better mixes in the extreme style of metal like death metal etc, I'm currently working with various bands so all advices are welcome.
I like the sound of studios like Audiohammer, The sound liar, Badass studio, Collin Richardson, etc.

here is one of my works

http://www.myspace.com/tteop

How does one replicate the Metallica drum sound on "Enter Sandman"?
Specifically the kick and snare, how can you use compression, gating, reverb and Eq to even come close to it?
Thanks in advance.

hey, i started singing not too long ago, i have a crappy mic, I'm gana get a new one after christmas or so, so i need to know what to get, i scream, it varies from stuff like "tha agony scene", "as i lay dying" and "the devil wears prada", theres more but, just to give u an idea, i do a small bit of vocals, so i dont want it to be horible for that,i usually use aduacity on my pc to cover songs,

Metallica was king of big guitar sounds. They were the first to make it sound REALLY BIG! They used like 8 marshall 4x12, with various mics and a huge tent cover to enclose the sound. The guitar sound you hear on the black album is clean, crisp and dint require a whole lot of dubbing.

Just a quick question. I'm looking to mic some aggressive metal guitar tracks from a single speaker cab. What kind of mice should I get?