change kde4 (pkg) to kde4 (ports)

[Giorgos Tsiapaliokas]

well,

i have install kde4 with the package system and i want to reinstall it via
the ports system.
because my system will have better perfomance and less hardware
requierements.

the previous time that i had install kde4 via ports it was working fine but
this time with packages it freezes and stacks a lot.

i know that i can reinstall the packages and install them again as ports but
i don't want to do that,i want to convert the package installiation into
ports installiation.