I installed a 6000(rtm) version of Basic yesterday to have a look. Of
course aero wasn't there among some other minor things like Chess. So
today i switched back from classic theme to Standard, and to my big
surpise Aero got switched on, including Flip3D and all stuff.

How this can happen i do not know, maybe Vista sees the Dx9 card and
decided to give the user Aero?? Hope this ain't a bug that will get
fiexed, cause I'd like to go for the Home Basic version.