Index: src/game/g_admin.c
===================================================================
--- src/game/g_admin.c	(revision 1744)
+++ src/game/g_admin.c	(working copy)
@@ -263,12 +263,32 @@ qboolean G_admin_name_check( gentity_t *ent, char
   gclient_t *client;
   char testName[ MAX_NAME_LENGTH ] = {""};
   char name2[ MAX_NAME_LENGTH ] = {""};
+  int alphaCount = 0;
 
   G_SanitiseString( name, name2, sizeof( name2 ) );
 
   if( !strcmp( name2, "unnamedplayer" ) )
     return qtrue;
 
+  G_DecolorString( name, testName, sizeof( testName ) );
+  if( isdigit( testName[ 0 ] ) )
+  {
+    Q_strncpyz( err, "Names cannot begin with numbers", len );
+    return qfalse;
+  }
+
+  for( i = 0; testName[ i ]; i++)
+  {
+    if( isalpha( testName[ i ] ) )
+     alphaCount++;
+  }
+
+  if( alphaCount == 0 )
+  {
+    Q_strncpyz( err, "Names must contain letters", len );
+    return qfalse;
+  }
+
   for( i = 0; i < level.maxclients; i++ )
   {
     client = &level.clients[ i ];
Index: src/game/g_cmds.c
===================================================================
--- src/game/g_cmds.c	(revision 1744)
+++ src/game/g_cmds.c	(working copy)
@@ -27,7 +27,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Bos
 ==================
 G_SanitiseString
 
-Remove case and control characters from a string
+Remove color codes and non-alphanumeric characters from a string
 ==================
 */
 void G_SanitiseString( char *in, char *out, int len )
@@ -61,14 +61,12 @@ void G_SanitiseString( char *in, char *out, int le
       continue;
     }
 
-    if( *in < 32 )
+    if( isalnum( *in ) )
     {
-      in++;
-      continue;
+        *out++ = tolower( *in );
+        len--;
     }
-
-    *out++ = tolower( *in++ );
-    len--;
+    in++;
   }
   out -= spaces;
   *out = 0;