hi all
just opened up the case and dust was everywhere...
so i cleaned it with some very cautious vaccuming and using a brush...
I noticed a cord from the sound car was loose but I assumed it didn't matter..
any way i installed an NVIDIA 7800 GTX 512 to replace the 6600 gt and i installed new 2 gb ddr2 ram...
I put it back together and I go to install the new driver for the video card and I notice some clicking noises... so I go to DIAXDIAG and test the sound, and I don't believe it but it works!!!
I go and play a music file and ... voila! It works!
So i guess this issue is closed and thankyou all who contributed (Eg. Broni (especially),BC_Programmer,etc.) for your time, efforst and expertise. Sorry for all the confusion...
THankyou all