Mining for most coins is fairly much the same, so your problem doesn't appear to be specific to Emercoin.

Did you just put -u MyUser.1 -p MyPassword or did you actually set up a worker on the pool website first and put your worker's name and pass when you start cgminer?

I have not used the pool.emercoin.com, but perhaps you need to set up a "worker" on that pool, then the name and password for the worker that you set up.

If that isn't the problem, and you're new to mining, then I'd suggest trying to mine solo to confirm things are working before directing your hash power to a pool.

Hoping a more experienced user will answer, if you can't solve your issue soon.

I think Emercoin is a good one to mine, especially if you are new