stuck in cgi-image mess

[nephish]

i have an html form with a drop-down list that lists a bunch of images.
how can i get my cgi script to load the image ?
i have imported cgi and os
text entered from a form and read from a file do ok, but i cant seem to
get it to load an image.

the form writes all of the entries as lines in a .txt file
this file is selected later,
all the lines are read,
and based on the first line of the text file determines the name of the
..gif image to load.

is there a way to do this, i think i am getting all the ' and '' stuff
confused.

thanks.