Try converting it with a program (save as) instead. DO NOT USE PAINT. Photoshop/infranview will do it alot better. JPG will lose some quality no matter what but it should be less so.
How do you convert ? don't you lose the good quality from the bmp ?
wen i rename and put .jpg it turns ugly.
I converted it with Photoshop at 80% quality, still looks almost as good at the original.