Checking and carrying forum sessions OUTSIDE of forums

[6impy]

I have a website seperate from the forums and I want to take advantage of the forums user system etc. for the rest of the website.

I have figured out how to be able to log users in from any part of the site and refer them back to the correct URL. It was pretty easy.

However, I am not sure exactly how I can check if a user is logged in and also carry the session both through cookie and in the URL.

I searched through 20 pages of results for the search 'session' and found nothing that could help me.

Can anyone help me?

Thanks!