I was able to run Call of Duty 1 on my old computer and it worked. I recently built a new computer and its not running on this computer. This is the error I get.
 
COD MP 1.5 build win-x86 Nov 10 2004
----- FS_Startup -----
Current language: english
Current search path:
D:\PROGRA~1\CALLOF~1\main\pakb.pk3 (60 files)
D:\PROGRA~1\CALLOF~1\main\paka.pk3 (41 files)
D:\PROGRA~1\CALLOF~1\main\pak9.pk3 (149 files)
D:\PROGRA~1\CALLOF~1\main\pak8.pk3 (235 files)
D:\PROGRA~1\CALLOF~1\main\pak6.pk3 (3 files)
D:\PROGRA~1\CALLOF~1\main\pak5.pk3 (4858 files)
D:\PROGRA~1\CALLOF~1\main\pak4.pk3 (1668 files)
D:\PROGRA~1\CALLOF~1\main\pak3.pk3 (1992 files)
D:\PROGRA~1\CALLOF~1\main\pak2.pk3 (694 files)
D:\PROGRA~1\CALLOF~1\main\pak1.pk3 (2642 files)
D:\PROGRA~1\CALLOF~1/main
D:\PROGRA~1\CALLOF~1\main\localized_english_pak0.pk3 (1204 files)
localized assets pak file for english
 
File Handles:
----------------------
13546 files in pk3 files
execing default_mp.cfg
couldn't exec language.cfg
couldn't exec config_mp.cfg
couldn't exec autoexec_mp.cfg
========= autoconfigure
----- CL_Shutdown -----
-----------------------
Hunk_Clear: reset the hunk ok
EXE_ERR_NOT_FOUNDconfigure_mp.csv
 
My system specs:
2 GB Crucial DDR2 Memory
P5NLI Motherboard Socket 775
NVIDIA GEForce 7900 GS Diablotek 512MB
Intel CoreDuo2 2.00GB
Seagate 160GB Hard Drive
Maxtor 20GB Hard Drive