Nepoznam az tak delphi ale predpokladam ze v nastaveniach projektu budes mat aj nastavenia adresarov pre unity apod., ak to najdes tak si dopln ten adresar kde je .dcu subor.

P.S. ak by si pouzil google tak by si nasiel napr. toto:
To do this in Delphi, first locate the file it's looking for (for example c:\pdoxdsn\paradoxdsncreateunit.dcu), and then by going to "Tools" | "Environment Options" | "Library" and adding the path to the "Library Path" settings. If you don't add the path to the Delphi Library Search Path, you'll get an error when compiling an application that the compiler can not find 'ParadoxDSNCreateUnit.pas' or 'ParadoxDSNCreateUnit.dcu'.