i have downloaded wordpres login but cant understand how to install it. instructions says to download the plugin in wp-content/plugins directory but where to make this directory on my hard drive? plz help
It doesn't get installed on your computer, it gets installed on your web server (probably via FTP) and that is where you will find the wp-content/plugins directory.
After you download the plugin, upload it in your plugin's folder in the wp folder in your ftp. then activate it in your Admin CP in wordpress. Next go to write Post - in that u will see the chitika plugin next to the other options like add image, add link etc. Good Luck!
here is a Little Flash movie that will answer you with detailed each and every step to Add chitika to wordpress... its usefull , hope you found it usefull too http://andywibbels.com/flash/chitika_minimalls_howto.htm