[fitsbits] converting to fits format

[Motallebi, Habib]

Hi,

I have a PC image files with flf extension,i.e. myimage.flf.
I like to convert these to fits format.  The first two integers
each are two byte widht and height representation resepctively. 
The file is 16 bit binary file. 

Can i append the contents of this image file to a fits header and
create a fits image file in that way?.

How can i do this is unix environment?. can cat command help?.
How can i do this in PC environment?.

hm