Standard (EADGBE)
To go along with the chords E D A as posted by another poster :),
Add C B A for that chorus bit or whatever it's called.
For improvising those solos and fills try the 2nd string 12 fret and
2nd string 10 fret area. Also the 1st&2nd string 3rd and 5th fret area
is a good spot to mess around during this song.