Touchpad doesn't work properly after format

Hello, I have a problem whan I format my notebook. It's a Samsung rv 420 with Windows 7 and 64 bits operation system.

It had a virus and I have to format it. coz don't have drivers for all software/hardware I had to get most of it. But, for my touchpad I cannot get the correct driver. This one have to have multitouch gesture on trackpad because when I bought the laptop the touchpad could do these actions (like 2 finger scrolling, 2 finger rotate, 2 finger pinch zoom, 3 finger flick and linear scrolling). My "mousse" (hardware) is "Compatible mousse PS/2", if that info would serve.

My laptop is a little new and in the samsung web don't appear the drivers :(

I think "Synaptics Gesture Suite Driver" , but I cannot get it too...AAAAHHHHHH!!!

Help!! I REALLY WANNA GET THAT DRIVER!!!!

Thanks a lot to any suggestion.... sorry 'bout any writter error, I'm from argentina :)