The .MAI files won't do you any good. Those are just information files for your movies. What you want are the .MQV files located in /MQ_ROOT/100MQV01 on the Memory Stick. Then use MSImport and copy the files to your hard drive. You wil need QuickTime 6 to view the files. Either rename the .MQV files to an .MOV extension, or double-click the file and tell Windows open it with QuickTime.