Vista Update Deactivated TouchPad

I recently installed a vista update and I did not see but it was for HID touch interface, basically for tablet pcs and stuff. And it deactivated the touchpad on my laptop. What can I do to reactivate it? Please help me.

If you know what update it was, you can remove it. At that point your old (functional drivers) should be running and your touchpad should be happy again.

Control Panel > Programs and Features > View Installed Updates