Url Reference

I am a web administrator for a content publishing website. I am stuck with a wired problem where some of the content which is being used throws 302 error message.
The thing is that we use siteminder to generate cookie's. And as we want our website to work in multiple domains we use a siteminder parameter which enables a reference to be made to a 2nd cookie provider server. Now when we login to the content website siteminder agent hits this cookike provider server as a reference. But it throws a 302 error message when trying to view some content.
I was going through some redirection stuff using .htaccess and wanted to know how can I allow apache to contact this 2nd cookie provider server as a reference.
I am not sure if I have made sense above. But I would appreciate any one's help over this.

Also can any one help me to figure out how can I make apache stop throwing the 302 error message when trying to refer to a external URL.

Yeah I need information like how is apache referring to an external url? proxy? redirect? rewrite? include?