Steps 6 and 8 are optional !!
Install your game or move it into "\Steam\steamapps\common\call of duty black ops\ " in mine case it's "C:\Program Files (x86)\Steam\steamapps\common\call of duty black ops\" because I tried it on W7 x64.
Update your game with "Call.of.Duty.Black.Ops.Update.1.Read.Nfo-SKIDROW
Download (see Attachment) [all files included which need to play vs bots].
Extract all files that you find inside rar archive.
Move all files [ except a folder named GreenLuma ] into "\Steam\steamapps\common\call of duty black ops\
Move all files that you find in folder named GreenLuma into "\Steam\"
Open "with Notepad++" "config_mp" file which you can find in "\Steam\steamapps\common\call of duty black ops\players\
" and search for this to change your ingame name. SCREENSHOT HERE
and here you can modify difficulty of bots SCREENSHOT HERE
Now open "GreenLuma.exe", log in into steam and add a game to your account. SCREENSHOT HERE
To add bots or change bots number, add/modify in config_mp:
seta scr_bots_managed_all "23"
seta scr_bots_managed_spawn "23" (if you want 23 bots)
seta sv_maxclients "24" (indicates max players on the server)
Start your "MP" game.
Tweaks for MP
There are 2 commands in config_mp that enables multi-core CPU and multi-core GPU.
seta r_multiGpu "0" disable multi-core GPU
seta r_multithreaded_device "1" enable multi-core CPU
( by default is disabled )