getaccountaddress "account" ?

what would the account be though?  I only signed up on cryptopia to get CHC.

Sorry, what do you mean by input terminal?  I went to request payment and saw the address there.. but it looks like a public address that changes.

A bit new to this...I bought 19 ChainCoin to start off.  I also downloaded the Chaincoin-QT wallet on my Mac.  Let's say I transfer the coins from Cryptopia to my wallet , and then my computer crashes or dies a month from now... how can I recover the coins?  Also can I store Chaincoins on a paper wallet or is that not possible?