Hi,
Stefan_K: thanks for your reply. Indeed, I use pdfLateX sometimes to include jpg in my documents. The reason I am posting this question is only to learn how to convert jpg to eps properly.
frabjous: well, i'm very confused... Let me tell you how i tried to convert the files, maybe you can tell me where i am doing wrong:
- with ImageMagick, i open a command window, and write: convert my_file.jpg eps3:my_file.eps
- with Inkscape, i open my jpg and then save as... my_file.eps. And this is what i get:

- Image1.jpg (24.81 KiB) Viewed 12946 times
Although, I've just realized something: after converting with Inkscape, if I re-open the eps file with Inskape, i see my full picture. The picture above is only the one gotten when i open the file with GSview.
Does that make sense??
Thanks, Jerome.