Hi, I also have the same problem after reformatting my windows xp... I no longer have my multimedia audio controllers installed... Some one please help.
The scan from http://www.d-a-l.com/hardware-scan.php shows

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OS Information:
PropertyValue
OS Name Microsoft Windows XP Home Edition|C:\WINDOWS|\Device\Harddisk0\Partition1
Service Pack 1.0
OS Manufacturer Microsoft Corporation
Windows Directory C:\WINDOWS


Processor:
PropertyValue
Current Clock Speed 2792
Description x86 Family 15 Model 3 Stepping 4
Manufacturer GenuineIntel
Name Intel(R) Pentium(R) 4 CPU 2.80GHz


Memory (RAM):
PropertyValue
Bank Label
Capacity 268435456

Bank Label
Capacity 268435456

Total Memory Deteced in Hardware: ~512 MB
Memory Reported to Operating System: 510MB

Disk Drives:
PropertyValue
Description Disk drive
Manufacturer (Standard disk drives)
Model ST380011A
Media Type Fixed hard disk media
Size 79999073280 (~75 GB)
Number of Partitions 1


Installed Printers:
PropertyValue
Name HP DeskJet 930C/932C/935C
Port Name LPT1:
Default True
Driver Name HP DeskJet 930C/932C/935C


Motherboard:
PropertyValue
Manufacturer Dell Computer Corp.
Model
Name Base Board
Part Number
Product 0N6381
Serial Number ..CN4811147F01Y0.
Version


BIOS:
PropertyValue
Manufacturer Dell Computer Corporation
Name Phoenix ROM BIOS PLUS Version 1.10 A01
Release Date 20040824******.******+***
Version DELL - 7


Monitor:
PropertyValue
Description Intel(R) Graphics Chipset (KCH) Driver
Name Intel(R) Graphics Chipset (KCH) Driver
Screen Height 768
Screen Width 1024


Keyboard:
PropertyValue
Description Standard 101/102-Key or Microsoft Natural PS/2 Keyboard


Pointing Device:
PropertyValue
Manufacturer Microsoft
Name PS/2 Compatible Mouse


Sound Card:
PropertyValue
Manufacturer Microsoft
Description Unimodem Half-Duplex Audio Device
Device ID MODEMWAVE\0\{F806AED1-E741-4634-8C01-D9180030341B}


Video Card:
PropertyValue
Adapter Compatibility Intel Corporation
Adapter RAM 67108864
Description Intel(R) 82865G Graphics Controller
Installed Display Drivers ialmrnt5.dll
Driver Version 6.13.10.3510
Driver Date 4/15/2003 2:39:46 PM
Video Mode Description 1024 x 768 x 4294967296 colors


DirectX Installation:
PropertyValue
Version 6.03.01.0146


Modem:
PropertyValue
Model Intel(R) 537EP V9x DF PCI Modem
Name Intel(R) 537EP V9x DF PCI Modem


Network Adapters:
PropertyValue
Description WAN (PPP/SLIP) Interface
Description Packet Scheduler Miniport
Description Intel(R) PRO/100 VE Network Connection #2 - Packet Scheduler Miniport
Description Packet Scheduler Miniport

External Ports:
PropertyValue
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator

Expansion Slots:
PropertyValue
Slot Designation PCI1
Slot Designation PCI2
Slot Designation PCI3
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I would greatly appreciate your help.

What is the exact model # of your Dell?

Also:

Have you added a sound card or are you using the original setup?

Unless you have added your own sound card the drivers will be available from Dell:

http://support.dell.com/support/down...ex.aspx?~ck=mn

Insert your model name & number & choose the audio driver.

If you have installed your own sound card then you need to look up that manufacturer's site for its' drivers.

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For example a Dell Dimension 3000 using Windows XP:

http://support.dell.com/support/down...&fileid=122481



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Also note that Dell PCs usually come with a dark blue CD labelled "Resource CD". This also contains all of the drivers that were originally installed on the system. The CD installs a very small program that detects what PC you have and which drivers you need so it is very easy to use