Asus P3C2000 with PC133 RAM?

Could someone possibly tell me if PC133 will work in my board even if it only supports PC100? Is anyone currently running this?

I was looking to purchase a either a 256mb or 512mb dimm and find it a waste to buy PC100 because PC133 is cheaper right now and it will be able to be used again in the future.

Will I have to overclock to use PC133?

I currently run an PIII-533B with 64mb of PC100

No problems here, you can always run ram below it´s specs.
So, go and get your PC133.