using mmc>add snap in>add>certification>computer account>next>finish>close>ok>expand the certification thing>personal>certifications>right click>all task>import>next>choose the generated file>next>next with no password>marking choose automaticly…>next>finish>ok>file>exit>save file as console1 on my g drive and ok
After this step you have to import the Certification Authority X.509 certificate to allow Windows XP to verify the VPN box server certificate.