General Support: disable medium-size or fullsize images

Hi ppl
my medium sized pics are 500px and fullsize are 640px
since my pics are already about 500Mb i want to get rid of medium-size images so that the full size ones would be shown (or in the other way - to put a size in options from 500 to 640px and get rid of fullsize images) coz in total medium and fullsize images give around 1Gb and i want to save some money.

I know that plogger generates med-sized images "on demand" from full-sized ones, so i have no idea how to solve my problem.

ok... is it possible just to make plogger generate all the medium sized images at the time they are added to the gallery?

ok. i did it.

so if someone esle needs to use uploaded images in the gallery and slideshow without resizing and without generating resized ("lrg-" ones) do the following

in gallery.php:

1. replace <img class="photos-large" src="'.$thumburl.' with <img class="photos-large" src="'.$config["baseurl"].'images/'.$row["path"].'

2. delete $thumburl = generate_thumb($row['path'], $row['id'], 'large');

3. replace s.src = "'.generate_thumb($row["path"], $row["id"], 'large').'";
with s.src = "'.$config["baseurl"].'images/'.$row["path"].'";

4. replace s.link = "'.generate_thumb($row["path"], $row["id"], 'large').'";
with s.link = "'.$config["baseurl"].'images/'.$row["path"].'";

in plog-admin-functions.php:

5. delete $thumbpath = generate_thumb($picture_path, $result['picture_id'],'large');

this really saves space on the server