How do I get my PCI bridge device to work?

I have a Compaq Presario F500 laptop

I was updating drivers when I uninstalled my PCI Wlan bridge.

I don't have a disk, and I don't know the manufacturer.

I downloaded the correct driver to a thumb drive from my brothers' computer.

And I still can't get it to install...

Is their something I have to do with the driver?

P.S. I'm unable to go on the internet with the laptop, so driver detective, driver robot, etc., is NOT an option.