tuning DADGBe Db or C?

this song kills just to let you know
**=vibrate
~= let ring

intro                              D|6666666666668**-4444444444448**-2222222222228**|
                                   A|666666666666----444444444444----222222222222---|
D|3**8-3**4-3**8|then for guitar 1)D|666666666666----444444444444----222222222222---| for guitar 3 G|563-563-563|

verse
D|000200-00200|
A|000200-00200|X 14(the first two times are heavier in the distortion than the other times)
D|000200-00200|

pre chorous               chorous
D|642~-5313~-642~-5313~|  D|7-7777-7777-3-3333-3333-2-2222-2222-0-0000-0000|
A|642~-5313~-642~-5313~|  A|7-7777-7777-3-3333-3333-2-2222-2222-0-0000-0000|
D|642~-5313~-642~-5313~|  D|7-7777-7777-3-3333-3333-2-2222-2222-0-0000-0000|

acoustic part
|7-7777-7777-5-5555-5555-3-3333-3333-5-5555|                D|579-5313-7777877787778|
|0-0000-0000-0-0000-0000-0-0000-0000-0-0000|                A|579-5313--------------|
|5-5555-5555-3-3333-3333-1-1111-1111-3-3333| then(distorted)D|579-5313--------------|

end
D|642|
A|642|
D|642|

order

intro
verse
prechorous
chorous
verse
prechorous              this song is so awsome if you want to leave me some suggestions or just say you hate 
chorous                 itand or love it just leave it for me! rate it pleae!
acoustic part
chorous
end