You do not need to manually register the ASE ODBC Driver
if you have used the Sybase SDK Installation program to install
ASE ODBC Driver on this machine.
To register the ASE ODBC Driver manually
Change to the %SYBASE%\DataAccess\ODBC\dll directory which contains the ASE ODBC Driver dll.
Run the regsvr32 utility to create registry entries in the HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI key.
regsvr32 sybdrvodb.dll