System Recovered From a Serious Error

I had the a similar problem about a month ago

http://answers.microsoft.com/en-us/windows/forum/windows\_xp-system/the-system-has-recovered-from-a-serious-error/da1629fc-32e0-4737-a5ff-63bf6003ddb2?page=1&tab=AllReplies

Thought it was fixed with all the great help I got here, but a day or so ago I rebooted and chkdsc came on without me scheduling it, then this morning I found my computer had crashed during the night ..

here's some Info-

Win XP Home 2002 SP III

Computer is getting old, Inter (R) Pentium 4CPU 240 GHz, 1.5 GB Ram

I Mainly use FFox

No idea about IDE drives or SATA drives

I have Avast free and Win Firewall

I have a CD and DVD but hardly ever use them

I don't know if I have a genuine bootable XP installation CD

Computer boots fairly well and fast

here's my System Summary-

OS Name    Microsoft Windows XP Home Edition

Version    5.1.2600 Service Pack 3 Build 2600

OS Manufacturer    Microsoft Corporation

System Name   

System Manufacturer    Dell Computer Corporation

System Model    Dimension 4600

System Type    X86-based PC

Processor    x86 Family 15 Model 2 Stepping 7 GenuineIntel ~2394 Mhz

BIOS Version/Date    Dell Computer Corporation A07, 11/6/2003

SMBIOS Version    2.3

Windows Directory    C:\windows

System Directory    C:\windows\system32

Boot Device    \Device\HarddiskVolume1

Locale    United States

Hardware Abstraction Layer    Version = "5.1.2600.5512 (xpsp.080413-2111)"

User Name   

Time Zone    Pacific Standard Time

Total Physical Memory    1,536.00 MB

Available Physical Memory    653.13 MB

Total Virtual Memory    2.00 GB

Available Virtual Memory    1.96 GB

Page File Space    3.35 GB

Page File    C:\pagefile.sys

My Display Info-

Name    NVIDIA GeForce FX 5200

PNP Device ID    PCI\VEN_10DE&DEV_0322&SUBSYS_80DF1043&REV_A1\4&1246FE7B&0&0008

Adapter Type    GeForce FX 5200, NVIDIA compatible

Adapter Description    NVIDIA GeForce FX 5200

Adapter RAM    128.00 MB (134,217,728 bytes)

Installed Drivers    nv4_disp.dll

Driver Version    6.14.11.7519

INF File    oem36.inf (nv4_NV3x section)

Color Planes    1

Color Table Entries    4294967296

Resolution    1024 x 768 x 60 hertz

Bits/Pixel    32

Memory Address    0xFD000000-0xFEAFFFFF

Memory Address    0xF0000000-0xF7FFFFFF

IRQ Channel    IRQ 16

I/O Port    0x000003B0-0x000003BB

I/O Port    0x000003C0-0x000003DF

Memory Address    0xA0000-0xBFFFF

Driver    c:\windows\system32\drivers\nv4_mini.sys (6.14.11.7519, 6.25 MB (6,557,408 bytes), 8/3/2004 10:29 PM)

I've been doing MalwareByte and SASpyware scans,

here's my Dump File https://skydrive.live.com/redir?resid=5E9161E0412D6528!164&authkey=!AJ38-Yq\_Q0SoGyY