hi Peter De Smidt, pinduro and brucek,
thank you for the replies and really appreciate it.
I had actually downloaded the software (REW) and installed it in my PC.
it works and i do hear the generated tones coming out from my PC speakers.
since i am seriously looking into taming my subwoofer (or rather to learn how to use such a powerful room EQ softare) i do thought of investing in a relatively good external sound card. had decided on Soundblaster Live! 24-bit USB External since is most widely used here and lots of trouble shooting tips should i ran into trouble
will definetely continue readings related threads in order to stay "troubles" free.
but the most valuable learning is from mistake (provided that one does not repeated the same mistake)
thanks and best rgds,
mike