I have a Compaq 500 with an AMD Duron 750Mhz chip, 192 Mb ram,Elsa Gladiac GTS 32 Mb graphic card ( with latest drivers ) and using DVD Express software player. Everything worked fine till adding the graphics card then films would lock-up at irregular intervals. Now everytime I play a DVD ( all are region 2 ), I just get the message "Key exchange for copy protection failed. Press OK to close Player." I thought it may have been a regional coding conflict but, both the player and the software show up as region 2. HELP, what the hell is the cure.