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Microsoft will sell two versions of its next-generation Xbox 360, priced at $299 and $399.

The higher-priced version of the console is expected to have a 20-gigabyte detachable hard drive, which could be used to store digital songs and photos and saved game components. Those who buy the lower-priced version, the Xbox 360 “core system,” could buy the hard drive separately for $100.

Seattle Times reporters and gaming experts Kim Peterson and Mark Rahner, who follow the industry and game playing, answered your questions about the console, the business and how the 360 plays.