I want to replace the capacitors in an old 19" monitor. I have been told you somehow ground the monitor with a screw driver.

Suggest reading Notes on the Troubleshooting and Repair of Computer and Video Monitors (http://www.repairfaq.org/sam/monfaq.htm), particularly the Monitor Troubleshooting / Safe discharging of capacitors in TVs and video monitors section. Electrocution possible, done poorly.