Hi

I myself got the solution. it was really kool

1) images were not coming as httrack was checking robot.txt on server and 
robot.txt was not allowing any image to be downloaded. so httrack was using
the full url in local site for images instead of a relative url at ur own pc

2) solution : a) just disable the robot checking in httrack
now it will download all the files and it will use a relative address in all
the placess
   b) in expert option : change to original url option (last in select list)
now even httrack is using robot.txt and not downloading any image from server
but still using a relative url for images (same as actual site on internet)

you can use either way ... both works

cheers !!!