How to Transfer a Website to WordPress

1. Register for WordPress and make sure to create your blog. Log in to the site and click 'My Blog' and then 'Register a New Blog,' then choose your 'something.wordpress.com' address to begin. You can't use the import tools or add new posts until you've created your site. After your site is set up, all the WordPress functions are available to you.
2. Click 'Tools' on the left-hand side of the WordPress Dashboard; choose 'Import.' WordPress has built-in migration tools for a few platforms. You can use the Import tool to migrate all your content from Blogger, Blogroll, Israblog, LiveJournal, Movable Type (or TypePad), Posterous, Vox, Yahoo! 360 or another WordPress website through this control panel. If you use one of these platforms, this is the easiest way to move your site to WordPress, but not the only way.

3. Check the WordPress support forums for specific importing instructions or tips for moving your content from a database other than the ones listed in Step 2. It's likely that someone else on WordPress is coming from the same kind of setup that you have. If you are using a site based on Drupal, Joomla, Mambo or another open-source CMS, you'll find tutorials in the forums to help you transfer your site over. But since WordPress is a simplified CMS, you may find that the contents of a complex, open-source CMS won't migrate seamlessly.
4. Create a new blog structure on your WordPress site and manually migrate your content if Step 2 or Step 3 don't work for your website. This is also the easiest way to migrate your content from a basic site that didn't utilize CMS software. Define pages in WordPress that mimic the static content of your existing site. If you have a section on your site called 'About Us,' create a page on WordPress by the same name, then copy and paste the content from your site to WordPress. WordPress uses 'Pages' for static, unchanging content and 'Posts' for blog entries. Create new posts for each piece of content from your old site and copy and paste the data into each post. This process can be time consuming for large sites.