Easy to use image editor ?

Hi, my mom just switched to mac after using windows for some years - she's loving OS X and all that, but she has one big gripe : she needs an easy to use image editor... Personally I use Photoshop 7 so I installed it for her - but well, you can't expect your mom to start learning about layers and rasters and such...

On windows she used Paint Shop Pro which had a lot of pre-configured effects she could just apply by clicking a few buttons (put a picture in a "frame", you know the stuff moms like to do ) - is there any image editor like that available for our beloved mac ? Thanks in advance...