DNA strider: $ 200 (version 1.2 , an old version i suppose)
Author adress:
Christian Marck
Service de Biochimie et Genetique Moleculaire
Bat. 142, Centre d'etudes de Saclay
91191 Gif sur Yvette cedex
France
I'm sorry but i don't know his e-mail address...
Hope this can help anyway...
Benoit Roche
roche at igmors.u-psud.fr