there aremany demonstrations.... search for them dude
But i tell u easy way:
1.download vc:mp server from the download section.
2.unrar the files any where on ur computer
3. from there u can open and edit config.ini file.
look in that file carefully(change the server name,its pass if u want, and most important is to change admin password.., then u might change spawn locations of vehicles and skins)
4.when done all/ or half /or none of step 3 u can still run the server...
it will be the basic server though...I mean u can useit for practicing stubby shots with ur frends.
5.save the config.ini notepad file before running the server..
6.now run vcmp-svr.exe...
7.restart ur vcmp and then click internet and search for ur server name...
8.it must be there if ur pc/laptop is running vcmp-svr.exe
Notes:if by mistake or ur intent vcmp-svr is closed ur server will stop responding.
Hope it may help u...
Regards
[SS]Faramir