[Plugin: Lightbox Gallery] Custom Resizing option? Please help..

Hey all, I have installed and successfully implemented the “Lightbox Gallery” plugin, however, I find that the “medium” image size setting is too small, and the “large” image size setting is much too big. Is it possible to set a custom value or custom ratio? This is really bugging me, and I cannot find out how to change it anywhere.

Can someone please help? 🙁 Really would be appreciated..

Thanks,
Matthew.