I have uninstalled incredimail from my computer, but still incredimail toolbar exists in Firefox, and I don't know how to remove it, please help.
Thanks

View > Toolbars and uncheck the ones you don't want.

Open up a Windows Explorer page.
Go directly to the "Programmes" folder on your C: drive and open it up.
Find the Incredimail MediaBar 2 folder and open it up.
In this folder is "Unwise.exe". Click on this and it will uninstall the toolbar.

Curlyben's method only hides the toolbar, not uninstalls it.