Silhouette users??

Are any of the five of you who read my blog (look, I’ve upped my estimate of how many you are!) Silhouette users? I have two questions. The first is: any advice on using non-Roman fonts? (Hebrew, Arabic, Cyrillic, etc) The Hebrew fonts on my computer are TTF, but they don’t work and I. am. getting. frustrated. Second: how often do you need to get new carrier sheets, and how should I be storing them so they don’t lose their adhesiveness more rapidly than they ought to?

Thanks!!