IDT Rel Conn why no create HANA database connection

hi all

for some reason, I cannot create a relational connection in the IDT when I go to

File->New->Relational Connection->SAP->SAP HANA Database 1.0->ODBC Drivers

there is no Data Source Name available for selection, HOWEVER

if I go to

File->New->Relational Connection->Generic->Generic ODBC Datasource->ODBC Drivers

this picks up my 32bit DSN without any problems

what is the difference ?

thanks

g