I know a lot of people play this in "drop d" tuning and it works but its really in 
"D tuning" and its how martin sweet plays it

D tuning/ 1 step down/ DGCFAD

Intro

E----------------------------------------------------|
B----------------------------------------------------|
G------2--------------2-------2------------4---------|
D-2-2--0-2----------5-2--2-2--0-2--------5-4---------|
A-2-2----2----0-2---5-0--2-2----2----0-2-5-2---------|
E-0-0----0--4-----0-3----0-0----0--4-----3-----------|

Vers
first this part one time when its only guitar
E-------------------------|
B-----------7-7-----------|
G-9-9--7-7--6-6--7-7-7-7--|
D-9-9--7-7--4-4--7-7-7-7--|
A-7-7--5-5-------5-5-5-5--|
E-------------------------|

then when the drums and bass come in its this part over and over again
E----------------------------------------------------|
B-----------7-7---------------------8-8--------------|
G-9-9--7-7--6-6--7-7-7-7--9-9--7-7--7-7--7-7-7-7-----|
D-9-9--7-7--4-4--7-7-7-7--9-9--7-7--5-5--7-7-7-7-----|
A-7-7--5-5-------5-5-5-5--7-7--5-5-------5-5-5-5-----|
E----------------------------------------------------|

Chorus

E----------------------------------------------------|
B----------------------------------------------------|
G-2-2--4-4--5-5-5-5-5-------5-5-------------2-2--4-4-|
D-2-2--4-4--5-5-5-5-5--3-3--5-5--5-5-5-5-5--2-2--4-4-|
A-0-0--2-2--3-3-3-3-3--3-3--3-3--5-5-5-5-5--0-0--2-2-|
E----------------------1-1-------3-3-3-3-3-----------|

E------------------------------------------------------|
B------------------------------------------------------|
G-5-5-5-5-5-------5-5------------------5-5--------7-8--|
D-5-5-5-5-5--3-3--5-5--5-5-5-5-5--3-3--5-5--5-5-5-7-8--|
A-3-3-3-3-3--3-3--3-3--5-5-5-5-5--3-3--3-3--5-5-5-5-6--|
E------------1-1-------3-3-3-3-3--1-1-------3-3-3------|

Vers 2
at the beginning of the second vers its the same as the first
but when the vocals come in the guitar goes like this
E----------------------------------------------------|
B------------7-7---------------------8-8-------------|
G--9-9--7-7--6-6--7-7-7-7--9-9--7-7--7-7--7-7-7-7----|
D--9-9--7-7-------7-7-7-7--9-9--7-7-------7-7-7-7----|
A----------------------------------------------------|
E----------------------------------------------------|

E----------------------------------------------------------------|
B-------------------------------------------------1212-12121212--|
G-14-14--12-12--14-14--12-12-12-12--12-12--10-10-----------------|
D-10-10--10-10--10-10--10-10-10-10--9--9---9--9---9-9--9-9-9-9---|
A----------------------------------------------------------------|
E----------------------------------------------------------------|

Brigde

Palm mute this part
E------------------------------------------------------------------|
B------------------------------------------------------------------|
G-----------------4-4-4-4-4-4-4-4-7-7-7-7-7-7-7-7-9-9-9-9-9-9-9-9--|
D-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-7-7-7-7-7-7-7-7-9-9-9-9-9-9-9-9--|
A-4-4-4-4-4-4-4-4-2-2-2-2-2-2-2-2-5-5-5-5-5-5-5-5-7-7-7-7-7-7-7-7--|
E-2-2-2-2-2-2-2-2--------------------------------------------------|

E------------------------------------------------------------------|
B------------------------------------------------------------------|
G-----------------4-4-4-4-4-4-4-4-7-7-7-7-7-7-7-7--9-9-------------|
D-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-7-7-7-7-7-7-7-7--9-9-------------|
A-4-4-4-4-4-4-4-4-2-2-2-2-2-2-2-2-5-5-5-5-5-5-5-5--7-7-------------|
E-2-2-2-2-2-2-2-2--------------------------------------------------|

rythm during solo

this i before and at the same time as the slide notes
E---------------------------|
B--------3-----------3------|
G--------2-----------2------|
D-2-2-2--0-2--2-2-2--0-2----|
A-2-2-2----2--2-2-2----2----|
E-0-0-0----0--0-0-0----0----| x4

and this is at the same time as the really fast notes
E-------------------------------------------------------------------|
B-------------------------------------------------------------------|
G-------------------------------------------------------------------|
D-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-6-6-6-6-6-6-7~------------|
A-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-6-6-6-6-6-6-7~------------|
E-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-4-4-4-4-4-4-5~------------|
                                                      *
                the two chord with this mark is at the same time (*)
Solo

E--------------------------------------------------------------|
B--------------------------------12h15p12-12h15p12-12h15p12----|
G--/9----/12----/14----/17---------------------------------15--|
D--------------------------------------------------------------|
A--------------------------------------------------------------|
E--------------------------------------------------------------|

E-----------------------------------------------------15------------|
B----12h15p12-12h15p12-12h15p15------10b--10b-----15b---15br--------|
G------------------------------15-----------------------------------|
D----------------------------------------------------------------7--|
A----------------------------------------------------------------7--|
E----------------------------------------------------------------5--|
                                                                 *
/=slide up to note  
P=pull off 
H=hammer on  
B=bend 
br=release bend
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