Hi Robert, Something is up with your IE 6.0 and I'm not sure what yet. Could you view this resource /res/msu/albertel/test/theta_test.problem inside your school's IE 6.0 and let me know which theta's are theta's and which aren't? And also include the 'Info' that gets printed out? -- guy@albertelli.com 0-7-1-8-27,137