This post provides further information about Browser Support to disable third party browser extension in Internet Explorer 6.0. To do it Follow:
Open Internet Explorer. From the 'Tools' menu, click 'Internet Options'. Click the 'Advanced' tab. Clear the 'Enable third-party browser extensions (requires restart)' check box. Click 'OK'.
Details Information:
Third party applications can be used to provide additional features on your system. Certain third party applications can interfere with the normal working of the system. It is recommended that these third party applications be blocked to ensure the proper functioning of the system.
To disable third-party browser extensions:
1) Open Internet Explorer.
2) From the 'Tools' menu, click 'Internet Options'. (The 'Internet Options' dialog box appears.)
'Internet Options' dialog box
3) Click the 'Advanced' tab. (The 'Advanced' tab appears.)
'Advanced' tab
4) Clear the 'Enable third-party browser extensions (requires restart)' check box.
5) Click 'OK'.