There should be no problem turning your photos into cursors - the editor can open .jpg files just fine. You'll just have to crop the right part of the photo.
Locked

Cursors from photos
Format to use to work in Cursor Editor
I want to be able to work on a cursor out of a actual photo and I need to know what format or how I need to save it as to be able to make my cursor. Thank you so much!!!!