Like I said, in your cstrike folder, do you have an addons folder? You should get adminmod as it comes with metamod & will set it up for you.
This is my liblist;
game "Counter-Strike"
url_info "
www.counter-strike.net"
url_dl ""
version "1.6"
size "184000000"
svonly "0"
secure "1"
type "multiplayer_only"
cldll "1"
hlversion "1111"
nomodels "1"
nohimodel "1"
mpentity "info_player_start"
gamedll "addons\metamod\dlls\metamod.dll"
//gamedll "dlls\BotMixer5000.dll"
trainmap "tr_1"
I use the latest WIP version 7 of realbot so it's dll is in the cstrike/dlls folder.
If you get adminmod & install it, there will be an addons folder, metamod folder & plugins.ini file created for you.