In 6.5.2, if you are in a survival session, just go to the tab marked "Selection" and click it.
A window title "Case Selection" will open; select the + tab next to"Site and Morphology" and highlight "Histologic Type ICD-0-3". Then you can either type in the ICD-O-3 code(s) for your primary site(s) from Appendix C (http://seer.cancer.gov/tools/codingmanuals/index.html), separated by commas, or you can use the "Find" button to search.....