Cannot connect to Universe in Design studio

Hi,

I can create 32 bit odbc for SQLServer database and created universe in IDT but cannot see the sample data in "Edit Query Specification" of Datasources in design studio. I am getting the error message below:

[Microsoft ODBC Driver Manager] The specified DSN Contains an architecture mismatch between the Driver and Application

I can create 64 bit odbc for SQLServer database and cannot create universe in IDT.  I am getting the error message below:

[Microsoft ODBC Driver Manager] The specified DSN Contains an architecture mismatch between the Driver and Application

I am using Design Studio 1.6, ODBC  and IDT on the same machine.

Thanks,

Jyothi