nvidia graphic drivers problem

[xqub33]

i have acer 5745g with geforce gt 330m graphic card and win 7 64 bit .. the nvidia control panel show my graphic drivers as 188.99 and the device manager shows the date as "04-02-2010"
on the nvidia site the latest drivers for my card is 258.96 with release date
2010.07.19

now when i downlaod and install it , it gives me componenets to select .. in that only the audio drivers are present .. not the graphic drivers .. as a result my drivers are not updated ..

any help is welcomed

btw i have the nvidia hybrid application which lets me select b/w nvidia and intel graphics