adobe flash player upgrade for mac 10.5.8

I can't watch any videos or use pandora, because this version of my macbook can't handle newer versions adobe flashplayer. It's really annoying because a lot of studying I do for school is with videos over the internet. I have the adobe flashplayer 10.3 already on my computer, but all websites requiring flash still dont work.

I ordered the snow leapord 10.6 dvd online, but I won't get it for about 3-4 days. Is there anyting I can do until then to get websites like youtube and pandora to work?