I sent in my SIR and I didn't have to pay any fees, but I heard it's supposed to cost $100.
I got this message:
Welcome! We are pleased you have accepted our offer of admission to UC San Diego!
We have received your Statement of Intent to Register
Look for information from your college in late spring regarding mandatory orientation, advising, and enrollment.
View your preliminary financial aid and scholarship awards. Official awarding begins in mid-May. Please check TritonLink for your official financial aid status - see the financial aid message below for details on how to access this information.
Now I got the SIR over with, what other things should I do?