Help - HP sound recording Very Low

I have a big problem
and i dont know how to solve it , i tried search everywhere.

i going to record sound from Voice chat
but when i try to record sound from pc , either is mp3 playing
or voice chat, volume is extremely low (i almost not hear anything )

i already tried tu push the volumer higher in sound settings
in volume control won't work.

i am not going to record out from the pc
what i want i record sound played on my pc and then play it back
on the same zd7000.

i have tried programs like :

sony sound forge
audiograbber
allaudio (or something)
record pad

all gave the same problem
after recorded i played the mp3 file and it was like it was recorded
on north pole, extremely low and noisy.


the only program that worked was Replay music
which installed an own sound driver.
but i cant use that program to record from a voice chat it seem
only record known music artist.

How can i solve this without buying other soundcard (if thats possisble)

i need to do recording good quality from a internet radio voice chat.

all my friends manage to do it but they are not on laptop .