Use the Open a Company window to find and open your company file.
To do this task
Select your company file. If you don't see your company file, click the Look in drop-down arrow and browse to the folder that contains your company file.
If you're not sure where to find your company file, look in the folder where QuickBooks normally saves company files.
Windows 7 and Windows Vista: C:\Users\Public\Public Documents\Intuit\QuickBooks\Company Files
Windows XP: C:\Documents and Settings\All Users\(Shared) Documents\Intuit\QuickBooks\Company Files
Note: Windows XP users see the folder as "Shared Documents" when browsing (clicking folders), but QuickBooks and Windows display the folder only as "Documents" in paths and addresses.
If you'll be sharing the file with others in multi-user mode, select the Open file in multi-user mode checkbox at the bottom left of the window.
Having problems with your QuickBooks company file? Don't worry! We can help. Visit the QuickBooks support site to search in-depth support articles or get help from a QuickBooks Support Representative. You can also contact Intuit by phone.
Finding a file on a computer running Windows