cant update dx9.0b to dx9.0c

HI guys,
i am a new member to this forum and i hav a problem related to directx.
my configuration is as follows :
Processor Intel(R) Pentium(R) 4 Processor 2.80 GHz
800 MHz. Socket 478
80 GB samsung HDD @7200 rpm
Intel(R) Desktop Board D865GBF based system
OS version Windows XP
Physical memory 768,744 KB RAM
Memory speed DDR400
Memory type DDR, Synchronous
Form factor DIMM
BIOS version P13 (BF86510A.86A.0053.P13.0401220953)

i hav SP2 installed on my comp. and DX9.0b came with it. Now i wanted to update it to DX9.0c
I hav tried it many times but it has still not upgraded to dx9.0c ( i did it with the dx that comes bundled with latest games)
the version no is still same. I cant play any of the new games like sims2, nfsmw, etc..
then i downloaded the redist. version & installed it , unfortunately nothing happened.
Also when i click on install, "installation complete " screen flashes instantly.
what should i do???

My DXDIAG flashes " ! " mark infront of qsal.dll file
the note is :
The file qasf.dll is an old version, which could cause problems.
You should reinstall DirectX to get the latest version.

I have updated all my drivers & they r even WHQL certified (Microsoft's Windows Hardware Quality Labs )

HERE is my DXDIAG report :

------------------
System Information
------------------
Time of this report: 5/19/2006, 13:52:36
Machine name: USER
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2, v.2096 (2600.xpsp_sp2_rc1.040311-2315)
Language: English (Regional Setting: English)
System Manufacturer: INTEL_
System Model: D865GBF_
BIOS: BIOS Date: 01/22/04 09:53:47 Ver: 08.00.10
Processor: Intel(R) Pentium(R) 4 CPU 2.80GHz (2 CPUs)
Memory: 750MB RAM
Page File: 515MB used, 1322MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0b (4.09.0000.0903)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2096 32bit Unicode

------------
DxDiag Notes
------------
DirectX Files Tab: The file qasf.dll is an old version, which could cause problems. You should reinstall DirectX to get the latest version.
Display Tab 1: No problems found.
Sound Tab 1: The file smwdm.sys is not digitally signed, which means that it has not been tested by Microsoft's Windows Hardware Quality Labs (WHQL). You may be able to get a WHQL logo'd driver from the hardware manufacturer.
Music Tab: No problems found.
Input Tab: No problems found.
Network Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (n/a)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (n/a)
DirectMusic: 0/5 (n/a)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: Intel(R) 82865G Graphics Controller
Manufacturer: Intel Corporation
Chip type: Intel(R) 82865G Graphics Controller
DAC type: Internal
Device Key: Enum\PCI\VEN_8086&DEV_2572&SUBSYS_42468086&REV_02
Display Memory: 96.0 MB
Current Mode: 1024 x 768 (32 bit) (85Hz)
Monitor: SyncMaster 763MB/713MB, SyncMaster Magic CD173D(P)
Monitor Max Res: 1280,1024
Driver Name: ialmrnt5.dll
Driver Version: 6.14.0010.4396 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 9/20/2005 10:52:38, 36990 bytes
WHQL Logo'd: Yes
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: ialmnt5.sys
Mini VDD Date: 9/20/2005 11:00:54, 1302332 bytes
Device Identifier: {D7B78E66-6632-11CF-1AF2-4C62A3C2CB35}
Vendor ID: 0x8086
Device ID: 0x2572
SubSys ID: 0x42468086
Revision ID: 0x0002
Revision ID: 0x0002
Video Accel:
Deinterlace Caps: n/a
Registry: OK
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Not Available
DDraw Test Result: Not run
D3D7 Test Result: Not run
D3D8 Test Result: Not run
D3D9 Test Result: Not run

-------------
Sound Devices
-------------
Description: SoundMAX Digital Audio
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: PCI\VEN_8086&DEV_24D5&SUBSYS_E0018086&REV_02
Manufacturer ID: 65535
Product ID: 65535
Type: WDM
Driver Name: smwdm.sys
Driver Version: 5.12.0001.5240 (English)

Edit: Please don`t start more than one thread for the same subject. Thanks.

hi, v_joy

I'm facing the same problem as you mentioned.. have you find any solution regarding this topic?

Have you both tried getting it direct from microsoft????