Well if you don't have 300 dollar for the Z5500 ( Or a sound system)
you can get the
G51s
and if you to get the best of your speakers, i configured my master EQ to the "itunes perfect EQ" you can google it, right now i use it to configure my master EQ on my sound card options you should try it I have the X540's and with the preset i can never go past half way with out them shaking my windows and getting in trouble :]
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Desktop/Netbook
Mobo - XFX 680I LT -Q8200/ Intel Atom N270
Case - Antec 300/ Glossy Pearl white
Ram - 2GB Corsair DHX/1GB Generic
PSU - Antec Earth Watts 500/6 Cell battery
Gpu - Evga 9800GTX+/onboard
HDD - Maxtor 160GB/ 8Gb SSD & 8GB Sd card
Extras - Logitch S510 - Logitech X-540 - Lifecam/VX3000/.3MP HD webcam
Monitor - Dual 19" W, Acer & Envision//8.9" Wide screen