I couldnt' find any comments regarding this.

I'd like to restrict folks from using certian shipping options under certian situations. For example, for international orders I'd like to not allow the customers to select First Class Mail International if the order total is over $100. Even being able to edit the shipping option to state "First Class Mail International (only for orders under $100USD).

Is this possbile? Just an edit of some obscure buried .php file?

Thanks!
Tim