Enabling QoS on 871W

[marlzzzzz]

Hi,

I bought an 871w second hand with 124-24T IOS on it.  I would like to enable QoS.  When I use Cisco Configuration Professional to manage the router I click on QoS and it says it is not available.  I know that the router itself is QoS capable.

This is my first time dealing with a router such as this and I wonder what I need to do to enable QoS.  Can anyone help?

Thanks in advance.

[marlzzzzz]

For further clarification the IOS on the device is:

c870-advsecurityk9-mz.124-4.T8.bin