You can get them repaired, look in the phone book.
A lot of people don't like the idea of repairing rims. Apparently "they will break" but I have heard plenty of people that know this fact but have never heard of one breaking.
I think the ROH rims are made from 6061 aluminium which is weldable. Unfortunately I don't know if they are tempered. If they are, welding will locally anneal the material and soften it. When you look into it, ask them if they heat treat after welding, I will be interested to know.
There is a fair amount of damage to your wheel, I would look further into replacing the outer rim. I am sure a wheel restorer could replace it in less time than going through ROH.