How to get coin address balance from *coind server?
You can type 'bitcoind help' to get the available commands. You can also type 'bitcoind help command' to get more information about the command.

You can find your balance in multiple ways:

getbalance: returns the balance of your wallet.dat as a number, you can specify an account (if set) in quotes to get information for a specific account, the default account is '' (blank)

getinfo: returns an array of information about your bitcoind, including balance

listunspent: returns an array unspent outputs sent to addresses in your wallet.dat, you can put an address in quotes to get information for a specific address