thanks for all your help!,, ill try it in audacity,,
i got to mention that in adobe soundbooth cs4,, you got that weird view (don't know how its called but it's like a spectrum or something that shows all the frequency's of the song.) underneath the green spectrum. The vocals have that darker and brighter yellow color so, i believe that if i delete the other colors (red and dark red) there will be a weak vocal version XD.
Thanks again for your help