Help me to clear PE-2

I'm appearing for CA PE-II in nov'07.I  couldn't pass in the last

two attempts.Plz help me in I.Tax .Which  chapters  and

sections in I.Tax are important? I'm following

T.N.Manoharan .
Also help me financial accounts.
Also help me in accounts and law to score more.
I'm following these books ::
Accounts   :: Mukherjee & Hanif  And L.M.Prasad
Law  ::            G.K.Kapoor & Std.Mat
Audit          :: Std. Mat &  Kamal Gupta

Cost & Finance  :: Std. Mat

Is it worth to go through scanner??
Plz help me as I have frustrated after being knocked out in the last two attempts.