Let's get some information about your system, a DxDiag output is most useful in this respect.
Got to Start>Run. Type in: dxdiag
Afterward press OK. Now a new panel should appear. After it finishes loading (Loading bar is located on the bottom left of the application) press the, "Save All Information..." button. Now save the file to a location easy to find, such as your desktop. Afterward go to the location you saved the file to and open the file. Now copy the first third (1/3) of the document and paste it in a response here.
That information will help us in determining what the issue might be.
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System Information
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Time of this report: 1/26/2009, 18:42:03
Machine name: OFFICE
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.080814-1236)
Language: English (Regional Setting: English)
System Manufacturer: MSI
System Model: MS-6712
BIOS: Version 07.00T
Processor: AMD Athlon(tm) XP 1900+, MMX, 3DNow, ~1.6GHz
Memory: 1024MB RAM
Page File: 266MB used, 1683MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.5512 32bit Unicode
------------
DxDiag Notes
------------
DirectX Files Tab: No problems found.
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
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
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Card name: RADEON 9700 PRO (Omega 3.8.330)
Manufacturer: ATI Technologies Inc. (Omega 3.8.330)
Chip type: RADEON 9700 PRO AGP (0x4E44)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_4E44&SUBSYS_00021002&REV_00
Display Memory: 128.0 MB
Current Mode: 1024 x 768 (32 bit) (60Hz)
Monitor: ViewSonic VX900
Monitor Max Res: 1280,1024
Driver Name: ati2dvag.dll
Driver Version: 6.14.0010.6660 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 12/16/2006 21:50:46, 263168 bytes
WHQL Logo'd: n/a
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: ati2mtag.sys
Mini VDD Date: 12/16/2006 21:50:29, 1918464 bytes
Device Identifier: {D7B71EE2-0D04-11CF-B669-0820A1C2CB35}
Vendor ID: 0x1002
Device ID: 0x4E44
SubSys ID: 0x00021002
Revision ID: 0x0000
Revision ID: 0x0000
Video Accel: ModeMPEG2_C ModeMPEG2_D
Deinterlace Caps: {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt
retch
{3C5323C1-6FB7-44F5-9081-056BF2EE449D}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{552C0DAD-CCBC-420B-83C8-74943CF9F1A6}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt
retch
Registry: OK
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled
DDraw Test Result: Not run
D3D7 Test Result: Not run
D3D8 Test Result: Not run
D3D9 Test Result: Not run
-------------
Sound Devices
-------------
Description: SB Audigy Audio [E400]
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: PCI\VEN_1102&DEV_0004&SUBSYS_00531102&REV_03
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: ctaud2k.sys
Driver Version: 6.00.0001.1361 (English)
Driver Attributes: Final Retail
WHQL Logo'd: n/a
Date and Size: 7/7/2008 10:31:10, 532376 bytes
Other Files:
Driver Provider: Creative
HW Accel Level: Full
Cap Flags: 0x0
Min/Max Sample Rate: 0, 0
Static/Strm HW Mix Bufs: 0, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: Yes
EAX(tm) 2.0 Listen/Src: Yes, Yes
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
Registry: OK
Sound Test Result: Not run
---------------------
Sound Capture Devices
---------------------
Description: SB Audigy Audio [E400]
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: ctaud2k.sys
Driver Version: 6.00.0001.1361 (English)
Driver Attributes: Final Retail
Date and Size: 7/7/2008 10:31:10, 532376 bytes
Cap Flags: 0x0
Format Flags: 0x0
-----I hope this is enough Thanks again