As someone else once stated in this forum, I've shut the door, and locked the keys inside...

When I click on the login link, it takes me back to the original screen, their is no login screen. Its like its looping back to the original page. Any ideas what I've done and what I can do to rectify the problem?
I'd like to finish what I've started but can't cause of the stupid login link...  

Or would it be better for me to wipe the directory on my host and re-upload everything? Only prob with that is its gonna take me 4 hours to upload.  

Any help would be greatly appreciated ...

I had the same problem
Under portal settings or portal configuration I've changed the login page into a page where no login module was present.
Result: I wasn't able to login anymore, so I couldn't change the settings.
Good thing is there is a solution , after some searching on the internet I found this page

http://blogs.snapsis.com/PermaLink,guid,05e0a045-4944-4f85-aa12-ac9cb774e2fb.aspx

where they tell you how you can get acces again.
I hope it works for you, It did work very well for me
Good luck...