Vista - Aero Disabled after reinstall

hi
i just reinstalled vista and have found aero disabled. I have a Intel 82945G chipset display adapter. I dont have a graphics card. I have installed all Intel driver also, but aero is still missing. I even installed this Windows Blinds and Tweak Vista and enabled Vista theming thru them, but no respite. Irony is that, previously in vista, Aero worked before even installing drivers and this time even after installing its not working
My PC has 2 GB RAM and 128MB shared video memory..

does some other drivers need to be installed for aero except for this.
SEE THIS PLZZZZZZZZZZZZ




Help!!!!!!

Yeah, if you don't have a graphics card and just have the onboard graphics then it might not be enough to have aero enabled. You have the minimum video memory requirements for Ultimate so you would probably have to get a graphics card.

Try right clicking on the desktop and click Personalize- windows color and appearance- then open classic appearance properties and have windows aero highlighted asnd click ok. See if it comes back.

Well sir, i have the brains to try out different themes and see if Windows Aero is shown.

Yes, i do have ON BOARD GRAPHICS. So that means i need to share my RAM with it? Right? So i need 128 MB for Vista Aero. Yeah i think this may be the culprit. But i am unable to know how much is my on board memory! How can i know that?
I know exactly that my BIOS is kinda puzzling and does not have any option to see/modify video memory [it says only 2 things about Video memory 1MB or 8 MB..which is definitely crap since i had Aero well and good 8 hrs back]
Isnt there a tool to increase on board video memory?

If I am reading things right the Intel 945G (yours) is supposed to support Aero. May also help if you don't have them to get the latest driver for it; you can get it from here,

Intel® Driver Update Utility - Check for the latest driver

As for how much memory your onboard has/is using, you can get that information from the Windows Experience Index, which on your computer is strangely missing (probably disabled by Compaq intentionally). To enable it follow the instructions here,

Windows Experience Index - Enable or Disable

Assuming that works, after you running it click on "View and print details" as shown in the second screenshot, and it will show how much memory the onboard video has.