Philips have acquired VLSI and are now using this chip (Thunderbird series) on their Seismic Edge sound card. Works on both W2K and XP. When system detects the card, there should be 3 unknown devices so there is a need to install 3 drivers. Just make sure all these 3 are installed accordingly and your soundcard should work fine.
1) Philips Seismic Edge Audio
2) Philips Seismic Edge Audio Game Port Enumerator
3) Philips Seismic Edge Audio Support Registers
Email me if you have any problems with installation.