Will Vista break my existing software like Photoshop CS2 or AutoCAD 2007 ? Can I run legacy software like on Vista ?

That were precisely the concerns of many users when Microsoft released Windows XP. Microsoft gave a free tool called Application Compatibility Toolkit (ACT) 4.1 to find whether your existing apps will be compatible with Windows XP with Service Pack 2 (SP2).

ACT for Windows Vista - Before you upgrade to a new operating system, ACT tells you which installed software will and will not work with the new OS in place, and Microsoft is preparing a whole new 5.0 version for Windows Vista expected to be released during the time Windows Vista ships.

Microsoft has also provided a new user interface in ACT version 5.0, which is designed to centrally manage configuring and scheduling compatibility evaluations. A reporting functionality can be used to view problems with updates, applications, systems and even Web sites not working under IE7.

Download Microsoft Application Compatibility Toolkit 5.0

Source: BetaNews | Ars M-Dollar