I agree with Zebelkhan, however if you wanted to take a looksie, the pillar moulding just pulls off as I recall. Start at the top I think the bottom had tabs.
I would not mess with seat belt if I were you. Find a competent dealer even if you have to drive a while. The nearest dealer to my home is 2 miles away but I use one that is 45 miles away because they do a better job.
The negator spring that caused the webbing to retract with near constant force is a pain to deal with. Let the dealer give you a new one installed, to preserve you insurnace coverage.