Forms Authentication without Report Manager

I am intergrating Reporting Services into my own web application and want to use Forms Authentication. Do I need to do anything different than the Security Extension Sample on MSDN books online? Specifically, since I no longer need to go through Report Manager, how would I login the user and manage the cookie?http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql2k/html/ufairs.asp?ferame=true will help you in this. Actualyl I am researching this myself. I am looking to add/delete user roles programmatically. So far, I am having little luck but, I think I'll pull it together!