No Sound

OS Name Microsoft Windows XP Home Edition
Version 5.1.2600 Service Pack 3 Build 2600
OS Manufacturer Microsoft Corporation
System Name MIAT-2676B7D7CF
System Manufacturer Gateway
System Model E-4000
System Type X86-based PC
Processor x86 Family 15 Model 2 Stepping 7 GenuineIntel ~1999 Mhz
BIOS Version/Date Intel Corp. RG84510A.15A.0021.P11.0210160839, 10/16/2002
SMBIOS Version 2.3
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "5.1.2600.5512 (xpsp.080413-2111)"
User Name MIAT-2676B7D7CF\Owner
Time Zone Pacific Standard Time
Total Physical Memory 512.00 MB
Available Physical Memory 335.86 MB
Total Virtual Memory 2.00 GB
Available Virtual Memory 1.96 GB
Page File Space 1.22 GB
Page File C:\pagefile.sys

Here is my system information. I was able to find a compatible graphics driver but have yet to have any luck with sound.It says my default device is Modem #0 line playback and it gives me no other option.Can anyone help please?!