Router Suggestions For Leaptel FTTC, And A Little Advice Please

Can anyone suggest a decent, not-too-expensive router for FTTC on Leaptel?

I don't need top of the line. I only have a couple of PCs and occasionally a tablet. No gaming. Not even much streaming, only youtube.

To be honest, The whole 'router plugged into the white NBN box' has me a little stumped. I've been using FTTB for the last 7 years, and ADSL before that.

How does one go about setting their preferred DNS servers when only using a router? Is that something you do in the PC's OS? Or does a sufficiently decent router have this capability?

Thanks.