A little tuning help..

I don't like tuning down unless I can play the whole song, improvisation or not. So, the song Science, by System of a Down, is
C G C F A D, and the tab section i wish to NOT improvise is:

d-------------------------------

a-------------------------------

f------------------------------7

c------------------------------7

g-0-0-0-0-0-0-------7-8-10-8-7-5

c-0-0-0-0-0-0-8--10-------------

How can I play that in standard?
Also, in the event that the tab failed, here is the link:
http://ultimate-guitar.com/tabs/s/system_of_a_down/science_tab.htm
Fig. 1

I think it would go:

d----------------------------------------

a-----------------------------------------

f-----------------------------------9------------

c-----------------------------------9----------

g-2-2-2-2-2-2--------9-10-12-10-9-7-7----------

c-4-4-4-4-4-4-12--14--------------------------

Since the lowest string is 2 whole steps (4 half steps) down, play 4 frets up. Since the other strings are one whole step (2 half steps) down, play two frets up.

why dont u just drop it?

Usually when I pick up a song where I have to drop the strings, it takes a few minutes to do it the first time, but as I progressively get through the song it takes less and less time to drop tune the strings. So far so, as to when I can do it in like 10 seconds

Lol, that was my 2 cents

it takes about 2 seconds for me to drop the E to a D lol

but my guitar is always in drop C. sometimes in D standard