install problems [with activcard software]

any suggestions on how to address this issue???

activcard software will not install on one of my home computers. although i have IE6 installed. i get error message "must have internet explorer 4.01 installed, update your machine..." and the install quits. the following error log dialog box then displays:

error

script: c:\pki\pki\device.vbs

line: 1

char:1

error: could not create object named "wscript.shell "

code: 8004011

source: wscript.create.object