I have two Extremely Good literary agents, Russell Galen (of Scovil Galen Ghosh) and Danny Baror, of Baror International, Inc. Russ handles my domestic (US sales) and film rights, while Danny handles foreign rights. If you have questions regarding rights availability (or anything else), you can find their contact information at:
Russell Galen - www.sgglit.com 
Danny Baror - www.barorint.com