Reading the configuration array of a MAX7000 PLD
The Altera Quartus software is unlikely to recognise your USB JTAG hardware.

If you have a parallel port it's very easy to make an Altera JTAG interface, I have a design here. Terasic makes a low-cost Altera USB JTAG interface.

If the CPLD hasn't been protected you should be able to read it with the Quartus software.