Support Information:
Device Type: Sound Card
Manufacturer: NEO
Model: M54SE
Interface: Other
Operating System: Windows XP Professional
Age of Device: < 1 year old
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=&qa5=19&qa7=1500&dp=1&qm0=M54SE&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=NEO+Sound+Card+NEO+M54SE+Windows+XP+Professional +)

Neo M54SE Notebook HD VIA audio driver for Windows XP.

DriverVersion: 5.10.01.1090
File date: 11/09/2006
File Size: 6,609 KB.

This driver set includes the UAA driver (required for proper HD audio installation) and the normal audio driver.
Both will be installed during the installation procedure.

Unzip to a temp folder and launch SETUP.EXE to begin the installation.

http://members.driverguide.com/driver/detail.php?driverid=1402471

OR

http://rapidshare.com/files/194172593/M54SE_Audio_XP.zip

What an interesting member name you chose. And it matches your hardware. It will look kinda weird if you need a driver for a different piece of hardware in the future.