how to upload images to the server?

hi there,
i am trying to upload small size picture 6k as a menu button,but it doesnt shown
on the side itself when i uploaded them.
the files details that i use as follows;
the picture name is sevmur.jpg
and it is in images folder.
the src is as follows; http://www.xxxx.co.uk/images/sevmur.jpg
the page name is picturetrial.htm
and the sevmur picture is on the picturetrial.htm

i have uploaded the picturetrial.htm page into the server outside of the
images folder. and also uploaded the sevmur.jpg into the images folder.
but still file doesnt seem on the site.

any comments please??
thanks in advance