Another cooling question - Northbridge on Abit IC7-G

I have IC7-G and the fan was getting noisy, so I decided to buy Zalman NB-series heatsink. Since there are only hooks for the original heatsink and fan, I’m wondering how to install it. NB47 has only push-pins for installing, since NB32 has also thermal adhesive.

Is there any way to install with the pins or should I go with the thermal adhesive and NB32?