HKCurrentUser\ControlPanel\SoundCategories\Ring\In itvol
change from 3 to 5 anything over 5 may distort...this will boost in call volume
\HKCurrentUser\ControlPanel\SoundCategories\ATTENU ATION
In electronics and audio, attenuation is the decrease in amplitude of an electrical signal. Attenuation is the opposite of amplification. For example a volume control on an audio system may be referred to as an attenuator.
Change all the values in this subfolder to 0 which raises the volume due to a lack of attenuation.
...Attenuation is the opposite of amplification...
Found here :http://pdaphonehome.com/forums/ppc-6...e-old-rom.html
This works I performed this on my Vogue...