I've got the same thing going on with one of my ankles. I stand on my feet 12-14 hours a day sometimes and I really need to get some orthotics from a podiatrist. Until I get some orthotics in my shoes, I'm using just some El Cheapo gel heel cups from Wal-World in my skate shoes and in my work shoes I've got the Dr. Scholls arch support going on.
I've found that if I support my arch (I have a high arch) the discomfort from the plantar fascitis (sp?) is minimized. Keep your laces tight so that your foot is properly supported. Don't be afraid to get some high-tops (Nike has some nice models) for a little bit more support. I second the Hot Ice. Does a great job.
Don't wear sandals on the weekends and around the house. Keep your feet supported anytime you are standing around. It will pay off for your skating and your carving next season.
"Only when it is dark enough can you see the stars" -Dr. Martin Luther King