Webcomic – custom prev and next buttons and RTL text alignment

Hello!
First of all, this is my site:
http://www.jaephoenix.org/savta/
I am working on a webcomic site using the “Webcomic” theme with Inkblot. I would like to know how to put in custom images as my previous, next, etc. buttons. I am kind of surprised neither webomic or comicpress have an easy menu based way of uploading these, seeing how so many comic sites have them. Please help?
Also, I will need them to be in reverse order since my comic site is in hebrew. Which brings me to my next point of order:

My site is in hebrew and a friends of mine who runs this comic site:
http://www.ho-lo.co.il
told me that to make things hebrew friendly he just had to edit a coule of small things, so eveyrthing aligns correctly. anyone know what I sould edit and to what?
My kowledge of any programming language involved is mostly from poking around and seeing what does what so please don’t speak to me in coding terms and expect me to understand. Took me a while just to understand what creating a div meant 😛