I have a network of sites on separate domain names but all on the same server.
I have a forum (vbulletin) on a different domain but same server. I am looking to have my current login system on all of the sites work with the one on the forum.
When a user registers on one site, it registers them on the forum also. When a user logs in on one site, it logs them in on the forum too (so they don't need to login again).
If you can do this for a low bid, I will consider you for more projects like this in the very near future!