How do i change a photo from bit map image to jpeg image?

I have lost my photo that was in jpeg and it is now in bit map, It was lost when I made space on my hard driveHow do i change a photo from bit map image to jpeg image?
By opening and saving as jpeg in something like Gimp.

http://www.gimp.orgHow do i change a photo from bit map image to jpeg image?
open in paint, save as, change format to jpeg, in menu
Open it in 'paint'

Then click on 'save as' %26amp; choose jpeg