I'm having the same problem after uninstalling iTunes & Quicktime. I downloaded Everest like you suggested earlier & then downloaded the drivers for the audio adapters but still no sound. Here's the summary. I think I copied everything you'll need but my motherboard still shows as unknown.
Computer:
Operating System Microsoft Windows XP Professional
OS Service Pack Service Pack 2
DirectX 4.09.00.0904 (DirectX 9.0c)
Computer Name 460E665AE93145F
Motherboard:
CPU Type Intel Pentium 4 531, 3000 MHz (15 x 200)
Motherboard Name Unknown
Motherboard Chipset ATI Radeon Xpress 200
System Memory 768 MB (PC3200 DDR SDRAM)
BIOS Type Award (06/09/06)
Communication Port Communications Port (COM1)
Communication Port ECP Printer Port (LPT1)
Multimedia:
Audio Adapter ATI SB450 - High Definition Audio Controller
Audio Adapter C-Media CMI8738/C3DX Audio Device
Help!!
