Access DB Connection/ASP

I'm new here and new to the whole ASP/Access thing. I have been trying to build a login paqe on my site to alow users to login to a unique page for that user.

I started off trying a couple of tutorials and walk-thrus and kept coming up with errors on my page. A friend that knows a bit about ASP and Access has been trying to help me and sent me to a tutorial on here for a guestbook just to get the basic ASP in there and get a connection through the db. I've attempted a DSN-less and system DSN connection and both have returned errors. The last one I tried (on the guestbook) was DSN-less. I received "unable to open registry key". I found a fix for the error on this site and it said to put in the actual path to the db and not the virtual path. So, I changed the path and got an error saying that the virtual path is required and I've entered a phsical path - lol. So, I'm in a loop and not sure what to do.

It seems that the most common error I receive is the "unable to open registry key". I've set a lot of permissions around the server. I have admin access to the box so changing them over and again isn't a big deal.

Anyone have any insight into what I need to do?

I gave modify perms to the folder containing the db and it's returning:

General error Unable to open registry key 'Temporary (volatile) Jet DSN for process 0xe28 Thread 0x738 DBC 0x328527c Jet'.

/guestbook.asp, line 17

Line 17 is:

adoCon.Open "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" & Server.MapPath("guestbook.mdb")

Still the same error.

IUSR_ is the user for IIS to run under. It has modify on the folder containing the db which also gives the db modify for that user. Are there any other permissions that I need to check on any other folders?

I have attempted to change

adoCon.Open "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" & Server.MapPath("guestbook.mdb")

to

adoCon.Open "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=d:\inetpub\joshb\www\guestbook.mdb" & Server.MapPath("guestbook.mdb")

and also to

adoCon.Open "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=d:\inetpub\joshb\www\guestbook.mdb"

and all returns the same error I have been getting.