Legs have feelings too

I plan to do my first Alpine snow hiking this winter, in Vic, and am wondering about what additional clothes I will need - ie. over and above what I am using for the other three seasons.
I have a ski-type jacket that I think will suffice for the top half; however, I am unsure whether I should plan for something warmer for my legs than just std waterproof overpants.
Whadaya reckon?
Andrew
PS. Is there any other Winter-only gear I should be considering?
I have a ski-type jacket that I think will suffice for the top half; however, I am unsure whether I should plan for something warmer for my legs than just std waterproof overpants.
Whadaya reckon?
Andrew
PS. Is there any other Winter-only gear I should be considering?