You want to remotely add photos to iPhoto?
Possible, but only from another mac.
What you'd have to do it turn on file sharing on the mac that contains your iPhoto library, and also forward the appropriate ports if it is behind a router.
Then, from your other mac, connect to the mac containing your iPhoto library, then launch iPhoto with the option key pressed so that it asks you to choose a library. Choose the library on your remote mac and it should open. You can then add photos to this library.