it's a pretty straight forward install, so i'm assuming the problem is due to some other factors. some details of what the problem is would help in a diagnosis.
i'm not sure which server i used, but i believe it was one of the US ones. when you double-click the file, it should open up in stuffit expander, are you getting errors when it's decompressing? if so, you should probably try a different mirror.
The problem is I am not sure if the whole file is here. The file I download is ooo103darwingm.dmg.gz 169.5MB. Have tried other sites and got worse results incomplete downloads. I click on the folder, Stuffit starts, runs for a while looking normal then gives message: An error occurred while expanding the file ooo103darwingm.dmg.gz (Archive was compressed with an unknown compression method). Error #17535. Guess Ill keep trying different servers.