Filenames of cgi-uploaded files

[Sposhua]

Newbie CGI script...

Uploading a file from a form - I need to know the filename (to ignore all
non-gif/jpg uploads) and filesize. Can't find anything in the tutorials on
theis :-( Then I guess I upload the pic using

form = cgi.FieldStorage
fileitem = form['picture']
if fileitem.file:
	pic_upload = fileitem.file.read()

(adapted from the tutorial, though it doesn't make much sense to me - expecially
the fileitem.file bit)