New Logitech LS21 Speakers Not Working with upgraded motherboard

First off, the speakers work just fine. I am able to use the speakers to play music from an ipod. The speaker connects to the computer through a single headphone jack. I have tried to place this jack into all of the audio connectors, including the front panel headphone jack, but the sound will not work. Is the sound card on the motherboard functional? Do i need to go out and purchase a new sound card? Please respond with all possible troubleshooting scenarios. Thank you.


Its an ECS Elite Group Motherboard; model: PA1 MVP
I'm running a Pentium 4 CPU, 3.4 GhZ, With Windows Vista Home Premium

I looked through Bios to try and figure out if something audio was disabled, but I was unsuccesful-- i'm not very experienced working in BIOS--

I'd appreciate any help you might be able to give.

Thanks

Sound Driver:
http://www.ecs.com.tw/ECSWebSite/Do...New&DetailDesc=&CategoryID=1&MenuID=6&LanID=0