Megadeth - When

Guitar 1(light distortion)
e|---------0---------------0---------------0--------------------|
B|-------0---0-----------0---0-----------0---0------------------|
G|-----5-------5-------5-------5-------5-------5-----5--5--5--5-|
D|---7-----------7---7-----------7---7-----------7--7--7--7--7--|
A|-0---------------7---------------6---------------0--0--0--0---|
E|--------------------------------------------------------------|

Guitar 2(HEAVY distortion)
e|--------------------------------------------------------------|
B|--------------------------------------------------------------|
G|--------------------------------------------------------------|
D|------------------------------------------------10-9--8--7---|
A|------------------------------------------------10-9--8--7---|
E|-------------------------------------------------8-7--6--5---|

(0:44) ("But you'll never see the pain inside of me")
Gt.1
e|---------------------------------------------------------|
B|---------------------------------------------------------|
G|-----5-------5-------5-------5-------5-------5-------5---|
D|---7---7---7---7---7---7---7---7---7---7---7---7---7---7-|
A|-0-------0-------0-------0-------0-------0-------0-------|
E|---------------------------------------------------------|

Gt.2
e|---------------------------------------------------------|
B|---------------------------------------------------------|
G|---------------------------------------------------------|
D|------------------------------------------------10-9-8-7-|
A|------------------------------------------------10-9-8-7-|
E|-------------------------------------------------8-7-6-5-|

(1:17) ("I've walked a minefield for you")
Gt.1
e|-------------------------|
B|-------------------------|
G|-----5-------5-------5---|
D|---7---7---7---7---7---7-|
A|-0-------0-------0-------|
E|-------------------------|

Gt.2
e|-------------------------|
B|-------------------------|
G|-------------------------|
D|----------------10-9-8-7-|
A|----------------10-9-8-7-|
E|-----------------8-7-6-5-|

(1:31)
Gt.2
e|-----------|
B|-----------|
G|-----------|
D|-10-9-8-12-|
A|-10-9-8-12-|
E|--8-7-6-10-|

Then repeat this for a while:
Gt.1
e|---------|
B|---------|
G|-----5---|
D|---7---7-|
A|-0-------|
E|---------|

(1:50) ("One day the sun will die")
Gt.1
e|---------|
B|---------|
G|---------|
D|-----5---|
A|---7---7-|
E|-0-------|

(2:05)
Gt.2
e|----------------|
B|----------------|
G|----------------|
D|-5-4-3--2-2-2-2-|
A|-5-4-3--2-2-2-2-| repeat this riff with the Gt.1 riff at 1:50,
E|-3-2-1--0-0-0-0-| just listen to the song for the timing.

(2:57)
Both Guitars (heavy distortion)
e|-------------|
B|-------------|
G|-------------|
D|-2-2-2-2-2-2-| (x3)
A|-2-2-2-2-2-2-|
E|-0-0-0-0-0-0-|

e|-------------|
B|-------------| repeat these two riffs for awhile,
G|-------------| once again just listen to figure out the timing.
D|-2-2-2-5-4-3-| 
A|-2-2-2-5-4-3-| <- this riff will play on it's own for awhile,
E|-0-0-0-3-2-1-|    but then goes back to the one above too.

(3:32)
e|-----------------|
B|-----------------|
G|-----5-4-----8-9-|
D|-5-4-5-4-5-4-8-9-|
A|-5-4-3-2-5-4-6-7-|
E|-3-2-----3-2-----|

(3:43)
e|---------------------------------|
B|---------------------------------|
G|---------------------------------|
D|-2-2-2-2-54-2-2-2-2-5/7-2-2-5/7-| (palm mute)
A|-2-2-2-2-54-2-2-2-2-5/7-2-2-5/7-|
E|-0-0-0-0-32-0-0-0-0-3/5-0-0-3/5-|

Now, they just modify this riff for awhile, you guy should be smart
enough to figure it out (warning: this is played fast!)

(6:03)
e|--------------------|
B|--------------------|
G|-9-9-9-9-9-9--------|
D|-9-9-9-9-9-9--5-5-7-| now go between this and the one above
A|-7-7-7-7-7-7--5-5-7-|
E|--------------3-3-5-|

riff under solo:
e|---|
B|---|
G|---| this chord is played palm muted
D|-2-| in different patterns under the solo
A|-2-|
E|-0-|

(7:42) (when the solo ends)
Gt.1
e|---------|
B|---------|
G|---------| this plays 'till the end
D|-----5---| 
A|---7---7-|
E|-0-------|

Gt.2
e|----------------|
B|----------------|
G|----------------| Gt.2 plays this every now and then
D|-5-4-3--2-2-2-2-| (it's like at 2:05 in the song)
A|-5-4-3--2-2-2-2-| 
E|-3-2-1--0-0-0-0-| 

The two guitars play that together, and they continue 'till
it fades out and the song ends.