Intel(R) 82915G/GV/910GL Express Chipset Family directx upgrade

Hi, Im not an expert nor a noob, The thing is that I have this Video Card Intel(R) 82915G/GV/910GL Express Chipset Family (it's really problematic) well, I can play Good games like Half-Life 2 ep 1 till a certain point, then it crashes, gets me back to my desktop and shows a message like this:

Microsoft Visual C++ Runtime Library
Runtime Error!
Program: hl2.exe (the directory where it is)
This application requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

and is the same thing for Need For Speed Most Wanted, well what I was wondering (after a few hours of search is that the DirectX of the hardware can be different than the software? is that so... how do I update the Hardware DirectX? I have 8.1 version (I saw it in the HL2 game, in options>video>advanced and at the bottom it says which DirectX I have. I have the Driver version 6.14.10.4543, Is this the latest? and if it is not which is the last one then?

I can't just buy another video card (like a PCI-Express or AGP) 'cuz I only have slots for Simple PCI (the old one) that is the reason I wanna deplete all the resources before I come to the conclussion that I have to change Computer (Due to the lack of a good video slot)

Just for you to notice, I have played Doom 3 really good (like 20 FPS and a little slower at certain points but nothing alarming) and in the page "can you run it?" says that I fail the test, does it means that I can't play it? and if that so then why can I play it? it is really confusing and I just want to get out of this doubt at once! Please Help me out! Thanks for your time and interest!

PD: Here are my PC Specifications

OS Information:
Property Value
OS Name Microsoft Windows XP Home Edition|H:\WINDOWS|\Device\Harddisk1\Partition1
Service Pack 2.0
OS Manufacturer Microsoft Corporation
Windows Directory H:\WINDOWS


Processor:
Property Value
Current Clock Speed 2660
Description x86 Family 15 Model 4 Stepping 9
Manufacturer GenuineIntel
Name Intel(R) Celeron(R) CPU 2.66GHz


Memory (RAM):
Property Value
Bank Label
Capacity 1073741824

Bank Label
Capacity 268435456

Total Memory Deteced in Hardware: ~1280 MB
Memory Reported to Operating System: 1270MB

Disk Drives:
Property Value
Description Unidad de disco
Manufacturer (Unidades de disco estándar)
Model Hitachi HDS721616PLA320
Media Type Fixed hard disk media
Size 160039272960 (~149 GB)
Number of Partitions 1

Description Unidad de disco
Manufacturer (Unidades de disco estándar)
Model ST340212AS
Media Type Fixed hard disk media
Size 39999536640 (~37 GB)
Number of Partitions 3


Installed Printers:
Property Value
Name Microsoft Office Document Image Writer
Port Name Microsoft Document Imaging Writer Port:
Default Falso
Driver Name Microsoft Office Document Image Writer Driver

Name Canon iP4500 series
Port Name USB001
Default Verdadero
Driver Name Canon iP4500 series


Motherboard:
Property Value
Manufacturer Dell Inc.
Model
Name Placa base
Part Number
Product 0HC918
Serial Number ..CN4811161802WD.
Version


BIOS:
Property Value
Manufacturer Dell Inc.
Name Phoenix ROM BIOS PLUS Version 1.10 A01
Release Date 20060224000000.000000+000
Version DELL - 7


Monitor:
Property Value
Description Monitor Plug and Play
Name Monitor Plug and Play
Screen Height 768
Screen Width 1024


Keyboard:
Property Value
Description Dispositivo de interfaz humana USB


Pointing Device:
Property Value
Manufacturer (Dispositivos de sistema estándar)
Name Dispositivo de interfaz humana USB


Sound Card:
Property Value
Manufacturer SigmaTel
Description SigmaTel High Definition Audio CODEC
Device ID HDAUDIO\FUNC_01&VEN_8384&DEV_7690&SUBSYS_102801C5& REV_1022\4&14D5CE6&0&0201

Manufacturer C-Media
Description CMI8738/C3DX PCI Audio Device
Device ID PCI\VEN_13F6&DEV_0111&SUBSYS_011113F6&REV_10\4&10B D256C&0&10F0


Video Card:
Property Value
Adapter Compatibility Intel Corporation
Adapter RAM 134217728
Description Intel(R) 82915G/GV/910GL Express Chipset Family
Installed Display Drivers ialmrnt5.dll
Driver Version 6.14.10.4299
Driver Date 04/05/2005 08:46:28 p.m.
Video Mode Description 1024 x 768 x 4294967296 colores


DirectX Installation:
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Modem:
Property Value

Network Adapters:
Property Value
Description Intel(R) PRO/100 VE Network Connection - Minipuerto del administrador de paquetes
Description Minipuerto del administrador de paquetes
Description Kaspersky Anti-Virus NDIS Miniport
Description Kaspersky Anti-Virus NDIS Miniport

External Ports:
Property Value
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:
Property Value
Slot Designation PCI_1
Slot Designation PCI_3
Slot Designation PCI_E_1
Slot Designation PEG
(note: Although it says PCI_E_1 I don't have it!)