Hi Jitendra

I'm the author of that first post you refer to.

You won't be able to achieve your requirements without using a third party component of some type - the DNN rewriter won't be able to work with htm extensions. There are a few different options.

Plugging my own product : the Url Master module will allow you to easily set up your site to use human friendly urls, plus it will allow you to switch to a .htm extension. The module is easily installed with the DNN module installer. It will also tidy up any existing DNN Urls that have already been indexed by issuing 301 redirects to search engines next time they spider the site.

To configure to .htm extensions, you'll have to make a couple of more adjustments : you'll need to map .htm to asp.net in the IIS configuration, and you'll have to change the 'ignoreRegex' filter in the Url Master settings so that the \.htm$ value is removed. The module is available as a free trial so you can install it and see if it works for you. Details are available at the link above - if you've got product-specific questions, please post them on the iFinity Product Support Forums.