Midtown your new smiles have to be uploaded to your smiles on the server. If you have a bunch of them break them into groups or catagories and when you upload them to the server make sure they stay in the right group.
Once they are uploaded then go to admincp >smiles> add new group name it what you did when you uploaded then you can select to upload one at a time or multipul. Now use your path and load them inot your smile group manager and your done.