I'm sorry Jaysun,
But most of the themes I make are not suitable for dial-up users, unless they are of the same type as the MyBB Default style.
Dial-Up users generally want Lo-Fi versions, Like MyBB Default is... I'm sorry, I'm not into those type of themes.
Though I do make some Lo-Fi versions for MyBB Mods before I take them a step further and make them more graphical.
Edit: You could also wait until the Aus-Themes default theme loads and then switch to the MyBB Default Theme in the Forum Index.
That will remember your settings and load that theme for you as the default unless you delete your cookies.
Then you can browse a lot faster without having to load all of the other images..