What is an update on the place and I do so?

Windows 7 upgraderequires replacing your existing installation of Windows Vista, making what is known as "instead of update". The installation process replaces Windows Vista keeps files and installed applications, files and personal settings. Of course, this requires careful analysis and planning.

1. Check to make sure that all installed applications and existing hardware devices are compatible.
2. Acquiring the required updates that you may be needed before upgrading to ensure their applications and hardware devices working after you install Windows 7.
3. Ensure that there is enough disk space for temporary files and operating system as well as their applications and files.
4. Enough memory to efficiently run the operating system and applications.
5. Processor speed acceptable.

If you meet the above criteria, you should not have a problem.