Lenovo has all the windows 7 drivers for the t61. Do a search on their site for system update and get the latest version and install it. It will pull down all the correct drivers.
What brand is your laptop? Try checking the manufacturer's support site for the driver.
lenovo thinkpad t61. i already performed the system update to download drivers from lenovo site but i didn't see pci simple communication controller driver.pls help. thanks