how to enable aero interface?

this is my config:-
amd athlon64 x2 3800+
1gb ddr2 667mhz ram(transcend)
nvidia geforce 6150 chipset.

i downloaded the latest forceware drivers for vista and installed them,
but the aero interface is not enabled,
how do i enable it,
how is its appearance?

[amitava82]

1. Right click your desktop and click Personalize.
2. Select Windows Color and Appearance.
3. From the list of color schemes, click Windows Vista Aero.
4. Click OK.

you could have got the answer just by googling. why wait for 40 minutes for answer when you can get within 5 minutes..