Step-by-step instructions to install QuickBooks for Windows from a download file.

Steps to convert a Simple Start company file to a different version of QuickBooks.

Lists the file extensions used for files created and used by QuickBooks for Windows and what those files are used for.

Overview about what can be converted to or opened in Simple Start. Includes links to more information about opening or converting company files created in earlier versions of Simple Start, opening company files created in other QuickBooks products, and links to frequently asked questions.

Information about the QuickBooks Conversion Tool, which converts your data from other programs so you can use it with QuickBooks.