i thought this might be helpful.
touch pad plugged into ps/2 mouse port.
Alps electric Co.
driver details: Alps
driver date: 5/30/2002
driver version: 184.108.40.206
it's a mouse and a touchpad driver.
i have tried some settings in the BIOS but it didnt work. a friend of mine changed some settings in the bios since whenever he used to connect the USB mouse, his touchpad didnt work. but no luck in my case in linux.