Please explain me what's going to happen.
I have 1 billion on cryptsy deposit. What will happen if I make one of these things:
a) I send all to my wallet. What's the difference between versions I have installed on my PC?
To make sure everything running smooth download latest version of wallet, in which new fix is applied. Nodes from your old wallet may no longer connect to fixed network,
b) I leave them on cryptsy.
Leave them there if you want, nothing wrong ll happen.
c) Should I do something with them before/after 08.01?
If you download new wallet and withdraw your coins from cryptsy and you sit with your coins in your wallet, there is chances you can earn stakes as an interest, which kicks off from 8th January, but with a heavy reduction in a new fix.
and at last If i am wrong anybody can help with more info, thats all i get so far lol