saving pictures

[peta]

when I save a picture off the internet, I rightt click on
the picture and a box comes up with save picture as, in
the save as type box I have the choic of file ext .art
or .bmp. Can I add .jpg file ext to this? If so how do I
do it.

 

[Plato]

when I save a picture off the internet, I rightt click on
the picture and a box comes up with save picture as, in
the save as type box I have the choic of file ext .art
or .bmp. Can I add .jpg file ext to this? If so how do I
do it.

This also happens after you cleaned out your internet cache folder?