Ok, I have just purchased some Sennheiser Pc150 headphones which have 2 x 3.5mm audio cables coming out of them. The problem is my soundcard only had one free port left for a 3.5mm socket so what I did was buy a Y splitter to make the 2 3.5mm audio cables coming out of my headset go into one 3.5mm cable to plug into my sound card. Obviously one of the cables coming out my headset is for the mic and the other is for the speakers so basicly I am combining these 2 cables into one. Will this work as I havent recieved the things yet to try them.