I cannot view some videos and participate in some websites since Adobe upgraded all to Flash 11.7. I have an older Mac G5 PowerPC (no Intel chip) running OS 10.5.8. I keep getting splash screens saying I have to update to Flash 11.7 but 11.7 is made for t

I cannot view some videos and participate in some websites since Adobe upgraded all to Flash 11.7. I have an older Mac G5 PowerPC (no Intel chip) running OS 10.5.8. I keep getting splash screens saying I have to update to Flash 11.7 but 11.7 is made for those Macs with an Intel chip. I am running the newest Flash for my system. It seems all concerned should have made Flash retro-compatible for those of us with older Macs. Is there a work around to this Flash requirement short of buying a new Mac with the Intel chip?