steam or halflife

I can't play ESF because I dont have half life on steam. Although I have it on CD but I can't link it to my steam account. I do have it installed on my PC but I don't seem to be able to play the mod. I can start the mod but as soon as I try to create a server for Lan it crashes. Please tell me...

Hi, I have some issues well actually 2 of'em when I play ESF 1.1 with Half-Life 2.. Here goes: 1) Bots won't work cos I'm using EVM (Evolution Mod)... Is there a way to activate them WITHOUT focking up the metamod that supports the amxmod that supports the EVM itself? I feel pretty...