The easiest way to accomplish that is to go to the site I have listed here which will automatically download a script that is mostly self-explanatory and will help you bind alot of keys. Just copy and paste the URL into your addrress bar.
I also use the nextwish script to bind from the CS controll settings start page, but most of my binding I end up doing manually through the config.cfg file. I bind things like "stopsound", "room_type 0" and stuff like that right in the CONFIG.CFG file in the cstrike folder. DAMN IT!