CloudBerry TweetIE is a Twitter plug-in for IE
CloudBerry Twitter plug-in for IE helps you to post excerpts from the websites you visit with a click of the button and attach a short URL to the source page.  

• Select the text on the web pages and tweet it to your friends
• Add link to the source with Chilp.It
• Install in a few minutes
• Download for free
• No registration required

System requirements

• Windows XP/2003/Vista
• Microsoft .NET Framework 2.0
• Twitter account

After I installed IE8 on my Windows XP system and found out this cool plugin for IE. The TweetIE is cool and adds value to my IE installations. Try it out yourself. Click here to download.