Hi Jon, welcome to OSIsoft vCampus!
Unfortunately this type of question might be better handled by our regular Technical Support -
generally speaking, Tech Support is better suited for PI System Administration & Configuration and End-User questions, whereas vCampus focuses on PI Programming and Integration topics.
Nevertheless have you had a look at this (techsupport.osisoft.com/.../KB00200.html) - it describes how to set up the PI web part ressources for anonymous access.
This is Windows based authentication and not forms based. Where is the technical support link?