database Question

The parent path for each of your accounts may look the same, but there's no guarantee that they are on the same server.

Accounts are separate entities, you can not go up one account's domain  path and over to another account. IIS prohibits that or else I'd be able to go from my account over to your account.

If you have multiple webroots (domains) under one account, you can go up the path, but not over to another webroot. If you put your db in a directory above the webroots in the path, both webroots can hit it.

the whole path to a file

for example C:\shay\database.mdb

you might be able to use physical path, as it is a free host..

and they SUCKS