http://support.microsoft.com/kb/190355
To enable IE 8 add-ons try one of the following
1. Enable all add ons
- Open IE8
- Select Tools then Manage Add-ons
- Select all the Add-ons listed
- Click the Enable All button
2. Check the IE8 shortcut(s)
Right-click on the shortcut you usually use to start IE
Select Properties from the popup menu
Look at the path name in the Target text window
Scroll to the end and look for these letters: -extoff
Click in the text line and delete those characters
Click the Apply button
Click the OK button
3. Reset the browser
Open IE8
Select Tools then Internet Options
Select the Advanced tab (far right)
Click the Reset button at the bottom of the panel
(Note; If you do this, you'll have to do no.1 again)
Let me know results.