hi, i have a p4 1.7 mhz, 256 mb ram win xp sp1 pc !! i used powerdvd 5 full version!!then if i install the full activated version of windvd 5 on windvd 5 startup it gives me error!! my powerdvd 5 is fully updated and windvd 5 is also the latest version!! then if i uninstall powerdvd 5 and then reboot and install windvd5 it works fine!! pls , can anybody help me in keeping both software on my pc!! same thing happens to my friends pc!! Thanks!! (http://progressive.warnerbros.com/thematrix/us/med/rev_theatre_0x3839_640_dl.mov)