Using Photoshop Elements 6.0 in a G3?

I have been a PC user in my business (photo-minilab), and wanted to try out MAC as inexpensively as possible, so traded for an iBook, G3, 800mhz, 640RAM, 30ghz hard drive. I know it is not a lot, but just wanted to get an idea about MAC, before I totally switched? The iBook is running Panther, now I find out that Adobe lists Tiger, and a G4 system as minimum requirements. I can upgrade to Tiger, but will PSE absolutely not work on my G3 machine? I am currently using XP with an AMD Athalon 1600 chip, not the Pentium 4 Adobe recommends for CS3, and it works fine, so I'm inclined to think that maybe PSE 6.0 will run on a G3 machine, but not being familiar with MAC, I thought I would throw it out to the experts.