M002, 7 inch Screen Android 1.74 aPad, can not connect wi-fi


Hi my wife have buy a M002, 7 inch Screen Android 1.74 aPad but we can not connect it with wi-fi to our router ? is there any setting we need to do ?
With best regards tg76
1) CPU: VIA MW8505 300MHz

2) Operating System: Google Android 1.74

3) RAM: 128MB DDR2 800Mhz

4) Display: 7 inch 16:9 widescreen 800*480 WVGA

5) Touch Control: Full size touch operation, Sliding menu, Functional icon dragging

6) Orientation Sensor: automatic steering display screen, There