"It is the countdown to Microsoft's most important product launch in at least five years and Microsoft has sky-high hopes. It expects Windows Vista to be its most successful PC operating system yet. But the sheer size of the next-generation software — it packs dozens of new features — and lingering questions over security have caused anxiety among some business and home users. On Jan. 30, the software giant will make Vista available to consumers. It will also unfurl the 2007 versions of Microsoft Office, a suite of software programs that includes Word, Excel and Microsoft Exchange Server, an e-mail messaging server."A decent article about the path of upgrading to Vista - the article claims that the 15 gig install footprint of Vista is going to be problematic for some users, but if your hard drive is so small that 15 GB makes you sweat, odds are very high your PC can't run Vista anyway. ;-)