Walkin On Sunshine

intro (played by bass, I think)
E|--------------------------------------| 
B|--------------------------------------| 
G|--------------------------------------| 
D|--------------------------------------| 
A|--0-0-0-5-5-5-5-5-7-7-7-7-5-5-5-5-555-| 
E|--------------------------------------| 

Main run

    A     D         E       D
E|--------------------------------------| 
B|--------------------------------------| 
G|--2-2-2-7-7-7-7-7-9-9-9-9-7-7-7-7-777-| 
D|--2-2-2-7-7-7-7-7-9-9-9-9-7-7-7-7-777-| 
A|--0-0-0-5-5-5-5-5-7-7-7-7-5-5-5-5-555-| 
E|--------------------------------------| 

Chorus
E|--------5-5-5-5-5-7-7-7-7-5-5-5-5-555-| 
B|--------7-7-7-7-7-9-9-9-9-7-7-7-7-777-| 
G|--6-6-6-7-7-7-7-7-9-9-9-9-7-7-7-7-777-| 
D|--7-7-7-7-7-7-7-7-9-9-9-9-7-7-7-7-777-| 
A|--7-7-7-5-5-5-5-5-7-7-7-7-5-5-5-5-555-| 
E|--5-5-5-------------------------------| 

if you want to solo, its in the key of A (5th fret E string)

and I would use the blues scale (the essential in rock guitar!):
E|--------------------------5-8-| 
B|----------------------5-8-----| 
G|----------------5-7-8---------| 
D|------------5-7---------------| 
A|------5-6-7-------------------| 
E|--5-8-------------------------| 

You could palm mute the main run for the verse, if needs be.

oh, and theres a crappy lil' riff that you could add, (I wouldn't, but)
E|---------------------------------------| 
B|---------------------------------------| 
G|---------------------------------------| 
D|--------------------14-14-14-14-14-12~-| 
A|----------5-5-5-5-5--------------------| 
E|--5-5-5-5------------------------------|