Changing the radar and map displays in Counter-Strike: Source

http://support.steampowered.com/cgi-bin/steampowered.cfg/php/enduser/std_adp.php?p_faqid=485

The options below will require you to use the Console in the game - if you are not familiar with the Console you should read the Console topic to get started.

Turn off radar in Counter-Strike: Source

If you would like to disable the radar, please enter the following command into the developer's console: cl_radaralpha 0

Radar display settings

• cl_radar_locked # (where # is 0 or 1) - locks the angle of the radar screen (off or on)
• cl_radaralpha # (where # is 0 to 255) - sets transparency of radar display (transparent to opaque)
• drawradar - shows the location text under your radar screen
• hideradar - hides the location text under your radar screen
• overview_alpha # (where # is 0, 0.5, or 1) - adjusts overview map translucency (transparent, semi-transparent, opaque)
• overview_health # (where # is 0 or 1) - shows player’s health in map overview (off or on)
• overview_locked # (where # is 0 or 1) - locks map angles so the map does not follow your point of view angle (off or on)
• overview_names # (where # is 0 or 1) - shows player’s name in map overview (off or on)
• overview_preferred_mode # (where # is 0, 1, or 2) - determines preferred overview mode while in spectator mode (off, mini-map, full map)
• overview_tracks # (where # is 0 or 1) - shows player’s tracks in map overview (off or on)