Application Compatibility Toolkit for Windows 7
So far, Windows 7 is getting much attention and rave reviews in its Beta version. The improvements from Windows 
Vista to Windows 7 are exciting and has new features like DirectAccess and JumpLists.
Some of the features require Windows Server 2008, so if you are still using Windows Server 2003 you should start to look at moving to Windows Server 2008 so you are ready to capitalize on the new Windows 7 features.
Another thing that you can do to prepare is to validate that the applications your business relies on will work in Windows 7. Microsoft has released ACT (Application Compatibility Toolkit) 5.5 which you can use to begin verifying your applications for Windows 7.
Conducting this exercise now will give you months to work with vendors to update any applications that have issues, or allow you to find other workarounds, or replacement applications that will work with Windows 7.
