Firefox web accelerator??

Is there a dial up web accelerator that is compatible with Firefox? Ive tried Fasterfox, doesnt work. Also, Firetune, not much better. My ISP has an accelerator, but it doesnt work when Im using FF, only IE. Does anyone know of anything else I can use? Most pages load pretty fast, but the ones with more images take longer. I would rather have the pictures not be so great, and have the quicker uploads. ----Maria