compile proftpd with mod_quotatab

[K. Worley]

ok I currently make this built and installed with mod mysql(from ports) 
for user validation and all is good.
However I wish to deinstall this and rebuild with mod_quotatab so as to 
keep track of usage better and limit the abusers.

My question is this:

How do I add mod_quotatab to the port to be able to make this? Has it 
been done by someone?
I have read the handbook and am currently trying to make a custom 
makefile but I really do not think i have the skills to do that 
successfully.

I do have the ability to make the port fully from the website source but 
I really would like to use the port simply because I think (not too 
sure) that there are special patches for FreeBsd.

Links:
the mod_quotatab page
http://www.castaglia.org/proftpd/modules/mod_quotatab.html