3ds max-working?

Why isn't 3ds Max working on my computer? I downloaded it and it wont load in because my computer isn't familiar with it, why is this so? I also heard it was a MAC program. Is this true? Plz help :( :o

definately not a mac program
same thing happens to me....
maybe the both of us actually dled it cough*kazaa*cough

tnx, Anzwhore :D