Bill Gates and Microsoft had the right idea a decade ago when they first started releasing tablet PCs to the market. They were clunky, too expensive, and the company didn’t improve them over the years. As a result, they missed the flood when Apple turned the tablet valve to full blast a year and a half ago. Microsoft is ready to jump in, but is it too late? Next week, Steven Sinofsky, President of the Windows Division for Microsoft, is expected to show an early version of a tablet-enabled operating system code-named (wait for it) Windows 8. There was a lot of excitement when the first of a series of videos…