If anyone is interested, I happened to see that stainless steel knobs are now available as replacements for Le creuset pots. I ruined one of my knobs using my Le creuset for baking bread at high temperatures. The replacement knobs can be used at any temperature. They cost about $9.00 at Amazon.
weavershouse
Yeah, Well im a bit low on money and a good way to use your regular knobs in the oven is to devour them in aluminum foil. Works like a charm.