If you want to check out Microsoft's Windows Store, you may have to wait. By 10:30 a.m. ET today (October 26), the store was at capacity and customers had to line up outside. A security guard says about 200 people entered the store between 9:30 and 10:30 a.m. ET, and about 1,000 had visited since he started his shift at 6 a.m. And a Microsoft rep says the store was busy all night long with people lined up for its late-night opening. She estimates about 600 people were waiting when the store opened at 10 p.m. ET.