Song: Glynis
Artist: Smashing Pumpkins
Album: No Alternative Compilation
Tuning: D A d G

Not to hard at all 

Riff 1
G|-------------------------------|
d|-------------------------------|
A|5--7--9--12------------0-3h3h3-|
D|-------------5--5--5h5---------|

When it changes.

Riff 2
G|-----------------------------------------|
d|-----------------------------------------|
A|7--7--7h7-0-3h3h3-5--5--5h5-0-3h3h3--3h3-|
D|-----------------------------------------|

When it gets louder play Riff1

Then start Riff1 but when you get to F# (9th Fret on A) go back down to E (7th fret on E) and hold it.

Before the solo play E's and D's.

During and after the solo play A's and D's.