You need a standard crank puller and a regular shimano BB removal tool for square taper cranks, one of which is Parks BBT-22.

From your post, I detect a certain naivete, so I'll add a few comments. Don't forget that the drive side is reverse thread. Su-uper clean the shell threads before reinstalling. Lightly grease the threads or use teflon tape on the cartridge threads.. Be REAL careful with the shell threads when working/reinstalling. They are very shallow threads and are easy to ruin. DO NOT cross thread it, not even by accident.

If you're not comfortable with this, have the LBS do it.