hi everyone. i am running osx 10.6.8 on a macbook that i bought 5 years ago. i am trying to get adobe lightroom to use for editing pictures but it appears that this operating system "no longer is supported" which is pretty bogus considering i payed 1100 dollars for this thing only 5 years ago and now I can't even run this program, but thats beside the point. so, i'm assuming i have to do the yosemite upgrade, and i'm wondering how much that costs. also i was told this 5 year old macbook doesn't have the ram to support yosemite, and i'm wondering if thats true, because if it is thats another $120 i have to spend just to upgrade the ram so i can run the new OS. so my main questions are A) how much does it cost to get yosemite? and B)does a 5 year old macbook with osx 10.6.8 need to have the ram update in order to run yosemite? if i could get some clarification i would greatly appreciate it. thanks in advance! cheers