.VB file cannot be opened in Visual studio 2010

Question

I have a file from an existing project called image.vb. When I try to open it in VS 2010, it is complaining that "There is no editor available for 'image.vb'. Make sure the application for the file (.vb) is installed. But all other .vb files can be opened in VS2010. Then I tried to open it in VS2008, and it shows something like :

00000000 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 ...............
00000001 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 ...............
00000002 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 ...............

and so on...

what is this type of file? how can i open it in VS2010?

Thanks