crank pulley/balancer removal

I have a 1997 GTP with 115,000 miles. The crank pulley cracked and I'd like to replace it myself. What's the proper procedure for removing it? What special tools would I need? Any help would be appreciated.

The tech procedure in link below should help:

http://mykidz.net/GTP/CrankPosSensor.shtml

thanks for the help.