I originally started playing SK through steam. So when i log on through steam it uses my steam ID.
But Steam is running poorly on my computer and i tried to log on via Sk.com and it tells me my user name doesn't exist.
Can i get around this or am i stuck logging on via steam?
If you use steam, the username is the steam ID (some random numbers).
Soemthing like steam:515211568534156
steam Id doesn't help the game just crashes then you trying to use it..... sad
As Lufte said, you will not be able to log on outside of Steam. Anything you attempt will not work.
Your username doesn't exist cause you are trying to log in with a different kind of account. If you want to play without steam you need to create a SK account on its site and start all over.