two steps.
1. control panel - add remove programs. remove mirar applications (everything mirar).
2. scan your pc for adware. remove all.
3. reboot.
If the above does not work. You can edit the registry (carefully).
Manual removal
Please follow the instructions below if you would like to remove Mirar Toolbar.A manually. Please notice that you must follow the instructions very carefully and delete everything that is mentioned. In most cases the removal will fail if one single item is not deleted. If Mirar Toolbar.A remains on your system after stepping through the removal instructions, please double-check by stepping through them again.
Start the registry editor. This is done by clicking Start then Run. (The Run dialog will appear.) Type regedit and click OK. (The registry editor will open.)
Browse to the key:
'HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Internet Explorer \ Toolbar'
In the right pane, delete the value called {179E4B4A-76C3-4F65-BCED-C9FA1A28D2EF}, if it exists.
Browse to the key:
'HKEY_CURRENT_USER \ SOFTWARE \ Microsoft \ Internet Explorer \ Toolbar \ WebBrowser'
In the right pane, delete the value called {179E4B4A-76C3-4F65-BCED-C9FA1A28D2EF}, if it exists.
Delete 'HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ CLSID \ {179E4B4A-76C3-4F65-BCED-C9FA1A28D2EF}', if it exists.
Delete 'HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ CLSID \ {8A0DCBDA-6E20-489C-9041-C1E8A0352E75}', if it exists.
Delete 'HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Explorer \ Browser Helper Objects \ {8A0DCBDA-6E20-489C-9041-C1E8A0352E75}', if it exists.
Exit the registry editor.
Restart your computer.
Delete the following files:
%SystemDir%\NN_BAR.DLL
%SystemDir%\NN_Bar21.dll
%SystemDir%\NN_Bar22.dll
Note: %SystemDir% is a variable (?). By default, this is C:\Windows\System (Windows 95/98/Me), C:\WINNT\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
Start Microsoft Internet Explorer.
In Internet Explorer, click Tools -> Internet Options.
Click the Programs tab -> Reset Web Settings.
A techie friend to assist when using regedit would be better.