Entering values for parameters at execution time

Hi,

I have created some test cases with parameters where the default value is blank.  These parameters are e.g. server names where the tester should go to during execution of the test case.  The same test case will be executed on a different server.

The parameter values in the test case are blank, but before/at execution time, I would like the tester to be able to set the parameter values.

I see that I can call a test case and pass parameters in, but in my case, I would need to create a test case which calls my "real" test case, and then duplicate the test case for every execution.

Am I missing something?