cod2mp_s.exe has stopped working

I recently installed Call of Duty 2 for Windows XP onto my Vista. I did this
on my brothers computer and it works fine no problems. I just bought this
computer two days ago. It is is the HP Pavilion a6130n. Here are its specs:

Windows Vista Home Premium (32 -bit)
AMD Athlon(tm) 64 X2 Duel Core Processor 5000 + 2.60 GHz
3070 MB of RAM
400GB Hard Drive
Nivida GeForce 8600 GT OC 256MB GDDR3

Thats all I really know if you need me to tell you me let me know what and
how to find it. Ok so what happens to me is that once I double click on the
Call of Duty 2 Multiplayer Icon it starts to load up normally but then when
it switches to full screen it comes back to windows and tell me this error
message "cod2mp_s.exe has stopped working". It gives me two options. First is
to Check online for a solution and close the program or just Close the
program. Here is the extra information it gives to me:

Problem signature:
Problem Event Name: APPCRASH
Application Name: cod2mp_s.exe
Application Version: 0.0.0.0
Application Timestamp: 4456a34f
Fault Module Name: cod2mp_s.exe
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 4456a34f
Exception Code: c0000005
Exception Offset: 0017fb02
OS Version: 6.0.6000.2.0.0.768.3
Locale ID: 1033
Additional Information 1: f389
Additional Information 2: 9ebfc6340d4140363bb14e252492b773
Additional Information 3: d8c2
Additional Information 4: e28b769fbf1d121734dfc19dfa8eee10

Please help me in anyway you can.
Thanks,
gtifreak