If you don't tell WHY you can't do it, nobody can help you solve it.
Luckily, if you just use Acer's eRecovery, they already are installed when it's finished.
Kees
Hi,
I installed new Windows 7 64bit, but can't install the Ethernet Controller, PCI Device and Universal Serial Bus(USB) Controller. Can someone help solve this problem :?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic