You will need to give more info such as your system specs before anybody can help you.
I can answer what Windows Aero is, but as far as why the score is so low, I don't know. Windows Aero is a window decorator or 'theme'. It allows the windows to appear transparent, allows changes to be made to the color of the windows etc.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Re: aero option and Windows Experience rating||rtdavide||Vista General||0||05 Jul 2008|
|Flaky Window Experience Index Aero Test||Eck||Vista performance & maintenance||0||16 Dec 2007|
|Windows Experience Index Score and Aero not working||loghome||Vista General||2||09 Dec 2007|
|Windows Experience Index Aero||sean_mcad||Vista performance & maintenance||1||22 Sep 2007|
|Windows Vista Aero Experience||=?Utf-8?B?U3RhbiBTb25uZWdh?=||Vista General||6||03 Oct 2006|