ADO connection, database file relative path .WIDESTRING STRCONN = "provider = microsoft.jet.Oledb.4.0; data source ="; strconn = extractfiledir (Application-> Exename) "//driver.mdb;Persist security info = false; Jet OLEDB: Database Password = XXX "; conn-> connectionstring = strconn; try {conn-> connected = true;} catch (...) {Application-> MessageBox (" Database connection failed! "," System error .. . ", MB_ICONWARNING MB_OK);