Enemy Territory Please emergency

I used to play Enemy Territory and True Combat Elite on Pcs and on a Ibook and never had any problems.

However I just bought a MacBook and cannot seem to make it work again.
When I click on the Enemy Territory icon, I have a black screen with green letters telling 'looking for cpu' 'found dual core' and then that screen disapear and I just hear some kind of an angry hornet sound repeating itself forever.

When I force the application to quit, it says between brackets : Enemy Territory (not responding)

I've been told by MacBook users to create a file called autoexec.cfg containing that text :

seta r_fullscreen "0"

and to paste it into the etmain folder. It did make the black screen with green lines go a bit farther, but then it blocked again.

When I force quit, if I ask for a report, it tells me that :

Date/Time: 2008-11-13 11:50:56 +0100
OS Version: 10.5.5 (Build 9F33)
Architecture: i386
Report Version: 4

Command: Wolfenstein ET
Path: /Applications/Wolfenstein ET/Wolfenstein ET.app/Contents/MacOS/Wolfenstein ET
Version: 2.60b4 (2.60b4)
Parent: launchd [71]

PID: 2378
Event: hang
Time: 5.00s
Steps: 20


Process: Wolfenstein ET [2378]
Path: /Applications/Wolfenstein ET/Wolfenstein ET.app/Contents/MacOS/Wolfenstein ET

ADDRESS BINARY
00001000 /Applications/Wolfenstein ET/Wolfenstein ET.app/Contents/MacOS/Wolfenstein ET
013c7000 /System/Library/Frameworks/DrawSprocket.framework/Versions/A/DrawSprocket
013d2000 /usr/lib/libcurl.3.dylib
14dd3000 /System/Library/CoreServices/RawCamera.bundle/Contents/MacOS/RawCamera
1b005000 /System/Library/PrivateFrameworks/OpenTransport.framework/OpenTransport
1c833000 /System/Library/Frameworks/OpenGL.framework/Resources/GLEngine.bundle/GLEngine
1c9e4000 /System/Library/Extensions/AppleIntelGMAX3100GLDriver.bundle/Contents/MacOS/App leIntelGMAX3100GLDriver
1cf2d000 /System/Library/Frameworks/OpenGL.framework/Versions/A/Resources/GLRendererFloa t.bundle/GLRendererFloat

Thread id: 33bd8b8
User stack:
8 ??? [0xde3d0]
8 ??? [0xdf874]
8 ??? [0xde760]
8 ??? [0xde3d0]
8 ??? [0xdf874]
8 ??? [0xde760]
8 ??? [0xde3d0]

these memory adresses are lasting for 200 lines.

The exact hardware of my MacBook is :

Model Name: MacBook
Model Identifier: MacBook4,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.1 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 1 GB
Bus Speed: 800 MHz
Boot ROM Version: MB41.00C1.B00
SMC Version: 1.31f0
Serial Number: W8838RN65HS
Sudden Motion Sensor:
State: Enabled

Graphic displays :

Intel GMA X3100:

Chipset Model: GMA X3100
Type: Display
Bus: Built-In
VRAM (Total): 144 MB
Vendor: Intel (0x8086)
Device ID: 0x2a02
Revision ID: 0x0003
Displays:
Color LCD:
Display Type: LCD
Resolution: 1280 x 800
Depth: 32-bit Color
Built-In: Yes
Core Image: Hardware Accelerated
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Display Connector:
Status: No display connected

Ho my god, I know, I'm asking a lot.
Please help me, this game really means a lot to me to keep a good mental health 🙂