Logging into vb through a .NET site

[alexbnow]

Before I post the question below as a new thread, I thought I'd check if your answer would apply to my situation as well? (If yes, what is this "CES Cookie Cutter")

I'm using an <iframe... /forum/ > to display the CMPS page (or it could just be the vBulletin home page) on my java/jsp application home page.

I'm interested in being able to somehow login the user based on the <username> etc info that I may be able to pass through to vBulletin application so that I can show the forum content that the specific user is permitted to see.

My users are coming from specific IP addresses since they mostly represent different companies. So I would like to show each user coming in the unique content specific to their company... but I cannot expect them to login to the forums as a secondary step from my java application?

Is there a way to pass the username/password via the URL?

Or to set a cookie on my parent domain etc that can be read by the <iframe...> included forum.

The current setup is I have CompanyName.com/forum hosting the forum software on a website provider's servers. I have my java application running at CompanyName.net/tick/app/Login/Login.jsp

Any suggestions for how I could do this?