How do I protect my development site with .htaccess

[eluser]RMinor[/eluser]
Here is my Apache Error Log:

[Tue May 01 16:48:35 2012] [error] [client 123.125.71.20] File does not exist: /var/chroot/home/content/p/i/n/pinkydinks/html/robots.txt
[Tue May 01 19:59:04 2012] [error] [client 95.108.150.235] File does not exist: /var/chroot/home/content/p/i/n/pinkydinks/html/robots.txt
[Tue May 01 19:59:04 2012] [error] [client 95.108.150.235] File does not exist: /var/chroot/home/content/p/i/n/pinkydinks/html/robots.txt
[Wed May 02 09:44:06 2012] [error] [client 66.249.71.239] File does not exist: /var/chroot/home/content/p/i/n/pinkydinks/html/robots.txt
[Wed May 02 11:54:09 2012] [error] [client 173.8.17.253] (2)No such file or directory: Could not open password file: /home/content/p/i/n/html/digrepro/.htpasswd
[Wed May 02 11:54:09 2012] [error] [client 173.8.17.253] (2)No such file or directory: Could not open password file: /home/content/p/i/n/html/digrepro/.htpasswd
[Wed May 02 11:57:11 2012] [error] [client 173.8.17.253] (2)No such file or directory: Could not open password file: /home/content/p/i/n/html/.htpasswd