This has been buggin me forever. I have read a couple other tabs on this songs intro and 
can't seen to see why ppl think they are right... but this is TRULEY HOW YOU PLAY IT!!!!
I know this isn't the whole song but its parts
the tunig is very low the 6th string is C and then the 5ht is G. Then you can just do 
5-0 tuning on the rest of the strings

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-----------------10---------------------------10-------------10-------|
---0-0-12p10p0p----12---0--0-12p10p0-12p10p0----0-0-12p10p0----12-----|
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--13-12-10-13-12-10-13-12-10~~~~~~~-----------|
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Chours
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-------------3-----------------------3--5--5--------------|
-0--0--5p3p0---5--0--0---5p3p0-5p3p0----3--3--5p3p0-------|
-0--0-------------0--0-----------------------------3^-0---|

------------------------------|
------------------------------|
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--5--5------------------------|
--3--3--5p3p0-------0-3-5-----|
--------------0-3-5-----------|

Verse
(Teach us not to play fiar...)
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--0-----------------6--------3-------0--------|
--0-----------------6--------3-------0--------|
--0-----------------6--------3-------0--------|

METALLICA MOTHA FUCKA!!