Here's how you can tell the real computer geeks from the rest of us. Ask about the first time they used a computer. If they get a glassy smile and their voice quickens with the memory, they're branded. They're geeks. That's what Trevor Anthony did Tuesday afternoon as he led a group of visitors through "Startup: Albuquerque and the Personal Computer Revolution," an expansive new permanent exhibit opening this weekend at the New Mexico Museum of Natural History and Science. For Anthony, it was a Radio Shack TRS-80. He was in junior high school, visiting family friends. It had a...