nat32.. what an annoyance that its now free.

[#1]

So... I was skint but needed a software router that did DNS and DHCP... nat32 was the answer.. except it was expensive.
So.. some years later I decide stuff this, i'm going to write my own DNS and then look at DHCP after.
I get the DNS working... and then what happens:? nat32 goes free 
So.. stuck between a rock and a hard place now.. continue with my own or just download and install nat32?

[#2]

Stick with your own after all that and stick the two fingers up@nat32