tikyo you had downloaded the Source Code of EPB not the instalation file, click on the Windows link - here it direct .exe
instalation and the fix
here. As Ancient pointed you already install the bots in your
\Steam\steamapps\<email or username>\counter-strike\
folder.
Then download the fix exctract it and copy the epb.dll in your
\Steam\steamapps\<email or username>\counter-strike\cstrike\EPODbot\
folder, then start CS and play, thats it.