Error when developing authenticated web page

[achick]

I am trying to develop a password protected web page using VBscript, MS Access and Front Page 2003.
I am very new to VBscripting and found a good article on Microsoft's web site(

http://support.microsoft.com/kb/825498/en-us).

I tried to implement it but I am getting a HTTP 500 server error.

I feel that the problem may be with database connection. Are there any debugging tools to check it?
I tried to change the location of database and the paths but I still get the error.