This is the CORRECT way to play Prayer.  It is in drop D flat 
(Db Ab Db Gb Bb Eb) Play with heavy distortion

Eb|----------------------------------------------------------------|
Bb|----------------------------------------------------------------|
Gb|----------------------------------------------------------------|
Db|----------------------------------------------------------------|
Ab|12-12-12-12-12-12-12-12-12-12-15-15-15-15-18-18-17-17-12-12-12--|
Db|0--0--0--13-0--13-0--13-0--13-0--13-0--13-0--13-0--13-0--0--13--|

Eb|----------------------------------------------------------------|
Bb|----------------------------------------------------------------|
Gb|----------------------------------------------------------------|
Db|----------------------------------------------------------------|
Ab|12-12-12-12-12-12-15-15-15-15-18-13-10-12-12-12-12-12-12-12-12--|
Db|0--13-0--13-0--13-0--13-0--13-0--13-10-0--0--13-0--13-0--13-0---|

Eb|----------------------------------------------------------------|
Bb|----------------------------------------------------------------|
Gb|----------------------------------------------------------------|
Db|----------------------------------------------------------------|
Ab|12-12-12-15-15-15-15-18-13-10-----------------------------------|
Db|13-0--13-0--13-0--13-0--13-10-0---------------------------------|

If you have any questions, you can E-mail me at caveman_ten@yahoo.com. Good luck.
Once you get the hang of it, it's a song thats hard to stop playing