CAN SOMEONE ACTUALLY HLP!! MAC OSX QUESTION?

I can't get anyone to answer!! :((( I was running 10.4.5 and then I went to software update, and it said something about 10.4.1.1 so I updated that to, and then, out of nowhere I cut it on, and I go to about this mac, (because I had that doubt) and now it says I'm running 10.4.5 and I can't fix it!!! it's not on the software thing!! CAN SOMEONE HELPPP??????? it's ANNOYING ME, and please NO LINKS I DONT WANT PPL GIVING ME FAKE THINGS ANYMORE!! PLEASE!!!! and I am really over the get a PC thing, I will never go back to th virus ridden PC crap ever again. All of them have crashed