You can easily improve Blogger functionality using many blogging tools available on internet. I'd recommend you to try and use Windows Live Writer, which is great blogging tool that allows you to do many things with your Blogger/Blogspot blog! I will display here some features that are not included in original Blogger interface!

Note: Windows Live Writer is completely free to download and use. And it comes from popular Microsoft! Also, works great with Windows Vista!  Fully supports all Blogger / Blogspot accounts and much more popular blogging services!

Windows Live Writer Features:

• Easy Blog Design Detection - Edit and create your favorite posts in friendly interface (same as your online blog) from desktop!
• Many Plugins Available - Make more with your blog, post videos easily, acronyms, smiley plugin, symbols and much more (visit main plugin page)
• Easily Integration - Add to your post technorati, digg, del.icio.us, flickr and more tags, tables, online videos, pictures, maps...
• Pinging Support - Windows Live Writer supports pinging services
• Spelling Checker - Automatic spelling checker integrated in WLM
• Multiple Accounts - Post on more accounts (blogs) from one tool. Really great function if you have multiple blogs!
• Much More... Drafts, posts editing, Link glossary, advanced tags (pictures and links) and much more!

For more informations and download links visit my review.