Well, sorry to say, if you're looking for 3Ds Max and you want it for free, tough luck. Costs $3500.00.
Use Gmax instead, found at
http://discreet.com/ and download the Gmax modelling tools found at the tools section of this site to help you along.
As for sounds,
http://flashkit.com/ (Learned this from Wormskull...) is a good website for sound effects, although some have a large file size. I have no idea how to make sounds using the computer.