I have a pretty new toshiba laptop (Satellite M35-s456) that came with a STAC9750TG codec chip sigmatel audio AC'97 Rev 2.2 compatible. However, I just bought the Logitech z-5500 5.1 set and tried to plug it into the headphone jack as an analog stereo set and the amplification was incredibly weak. Although the speaker set said that it had 500 watts rms, it didn't sound even as loud as my friend's 2.1 200 watt set. I was wondering what i had to do to amplify the audio. I bought the soundblaster audigy 2zs notebook sound card in order to be able to plug all three plugs in for 5.1 audio but will that make it louder? What can i do to be able to make the set really loud? any help would be appreciated.