Problems loading asp pages

I have a basic access database running, that I will have users connecting to using asp pages. The pages and database load fine when testing it. However I need to restrict access for certain users. I have put up a login page (login.asp) and have a small access table with the user list and passwords.

The problem is after a user types in their login information it gives a http 404 error, page not found. I know the server can run asp pages, but the login scripts just dont work. I have tried two different scripts. I have heard this could be a possible permissions error, but I don't even know where to begin troubleshooting this issue. Any advice or ideas would be greatly appreciated.

404 is the file wasn't found.

Check the URI in your <form> element's action="" attribute.