Second Life and windows 8

After some hours i could´t make the game "Second Life" work on windows 8. After some internet research i found that there is alot of peaople with the same problem and always with ATI video cards. To be more specific i have a ATI RADEON 4500 HD video card. I tried to install all the drivers available for windows 8 and even tried to install windows 7 drivers but i always get same error that says that my drivers are not up to date. I tested on Sl original viewer and exodus but both crashed when trying to load.