make package from port

[Killermink !]

Hello all,

I have installed a few ports, the most notable being xfce-4.0.0

I now want to reinstall BSD, mainly because I am playing, but also because I 
am going to delete my XP partition and use the whole disk for FreeBSD.

So, after doing so I wish to be able to install Xfce again, but don't want 
to have to go through the ports install as it takes ages on my lowly machine 
and I do not want to have to remain connected to the net while doing so.

Is there a way I can create a package of xfce and its dependencies, so i can 
back them up, reinstall then pkg_add them/it easily?  I tried a make package 
but it failed as it said it was already installed?

For those not familiar with the xfce install, I made the xfce-4.0.0 port 
installed from the CD, which is a meta-port for the other packages. (I say 
this cos it may be relevant to why make package does not work)

All help thankfully received!

Killermink

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