Unhandled Exception - Moving Database File?

I'm creating this VB 2008 application and I want to make it into a CD so it can be installed in other computers. Problem is, after I create the setup and start it even from the computer that created the application in the first place, it gives me the "unhandled exception has occurred in your application. If you click Continue, the application will wignore this error and attempt to continue. If you click Quit, the application will close immediately." and "The following file could not be found: "C:UsersMyNameAppDataLocalApps2.0Data\VHMGGXM7.8K8..." errors.

Since my first "form" is a login system, I am not sure if this problem appears because of the database search, or just the transition between forms (unlikely, I guess, since there is sort of an introductory video before the login system which uses the same logic to transition between forms)... So I tried moving the access database to a different path and I wanted to know how to tell the program (through v.b.) that the database is now in "this path" without having to re-connect and create a new DataSet, which will make me have to start the whole project again. I set up the whole project in Program Files (a place all computers must have). The video before the login system works fine, but I can't really find any other problem.