"Guitar Hero" is a new game for Playstation 2. Cathi's sold on the simulation of the rock n roll lifestyle; Nora likes the idea of a game interface that mimics the content of the game. Plus: a new memo from Bill Gates to Microsoft employees suggests they need to look to providing software services online to keep on top of the software world. Nora says, uh, dude, Web 2.0? THE STORY ON THE MEMO http://www.redherring.com/Article.aspx?a=14392&hed=Gates+Memo+Rocks+Micr...