Little .htaccess help

[Boogie]

I am looking for some help in blocking certain domains from hotlinking (instead them getting an error image)

I know how to do a blanket redirect but not one for specific domains :?

specifically I've got two sites showing up in referrals:

http://www.ridgeviewelem.org/

http://www.uccpp.org/


i dont know what they are and cant find any information on them (visiting them forwards me elsewhere) and am particuarlly worried about those domains.

any help?