Once you deleted it, you'l need to rerun the Device Configuration Wizard from within the GUI to ad it back in.
Just on General Purposes, I would suggest the upgrade to v9.1 it's free and will accept all your v9.0 serials
v9.1.4691.1 here
http://support.veritas.com/docs/264658
SP5 here
http://support.veritas.com/docs/286923
DriverPack here
http://support.veritas.com/docs/273853