Aero feature in Windows bring lot of eye candy with glossy user interface effects. By default, Aero feature is not available in Windows Vista Home Basic and Windows 7 Home Basic.
Aero enabler allows you to get Aero feature even in these version of Windows operating system. It is done by disabling Hardware check feature which prevent Aero initiation. Try this tool to get Aero feature on Windows (it changes registry keys, make sure you backup or create system restore point – be careful).