Gel lors de Warcraft III

Bonjour,
Il y a quelque jours, je me suis acheter Warcraft III ainsi que son expansion, Frozen Throne. pour jouer avec quelques potes sur Battle.net.
Tout fonctionne à merveille lors de l'instalation. J'ouvre ensuite le jeu, tout va bien.
Mais c'est après 5 minutes d'une campagne que mon PC gèle... Aucun moyen de bouger la souris, de faire ALT+F4, etc.
Je redémarre donc mon ordinateur. J'essais encore, mais maintenant, aussitôt que je clique sur un onglet, mon PC gèle...
J'ai rechercher sur le net pour une solution, j'ai essayer plein de truc, mais sans succes...
Je vous envoie donc mon dxdiag...

------------------
System Information
------------------
Time of this report: 3/1/2008, 11:54:28
Machine name: SPOL
Operating System: Windows XP Home Edition (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.070227-2254)
Language: French (Regional Setting: French)
System Manufacturer: n/a
System Model: n/a
BIOS: Award Medallion BIOS v6.0
Processor: AMD Athlon(TM) XP 2100+, MMX, 3DNow, ~1.7GHz
Memory: 512MB RAM
Page File: 294MB used, 955MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2180 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
---------------
Card name: RADEON 9250
Manufacturer: ATI Technologies Inc.
Chip type: RADEON 9250 AGP (0x5960)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_5960&SUBSYS_40541458&REV_01
Display Memory: 128.0 MB
Current Mode: 1024 x 768 (32 bit) (60Hz)
Monitor: Écran Plug-and-Play
Monitor Max Res: 1600,1200
Driver Name: ati2dvag.dll
Driver Version: 6.14.0010.6614 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 5/3/2006 11:51:00, 258048 bytes
WHQL Logo'd: Yes
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: ati2mtag.sys
Mini VDD Date: 5/3/2006 11:50:42, 1540608 bytes
Device Identifier: {D7B71EE2-1A20-11CF-3E6E-5E60A0C2CB35}
Vendor ID: 0x1002
Device ID: 0x5960
SubSys ID: 0x40541458
Revision ID: 0x0001
Revision ID: 0x0001
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_BOBLineReplicate
{6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(YV12,0x32315659) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YV12,0x32315659) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
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: NVIDIA(R) nForce(TM) Audio
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: NFORCE_VAD
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: nvapu.sys
Driver Version: 6.14.0462.0000 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 4/13/2005 12:34:02, 414464 bytes
Other Files:
Driver Provider: NVIDIA Corporation
HW Accel Level: Full
Cap Flags: 0xF5F
Min/Max Sample Rate: 200, 100000
Static/Strm HW Mix Bufs: 256, 254
Static/Strm HW 3D Bufs: 64, 64
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: Yes, Yes
I3DL2(tm) Listen/Src: Yes, Yes
Sensaura(tm) ZoomFX(tm): No
Registry: OK
Sound Test Result: Not run

---------------------
Sound Capture Devices
---------------------
Description: NVIDIA(R) nForce(TM) Audio
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: nvapu.sys
Driver Version: 6.14.0462.0000 (English)
Driver Attributes: Final Retail
Date and Size: 4/13/2005 12:34:02, 414464 bytes
Cap Flags: 0x41
Format Flags: 0xCC0

Je suis plutôt nul en informatique, donc je ne saurais en dire plus... sur ce, j'espère que vous saurez m'aider...

Merci à l'avance...