correct way to install sets?

[Noah McNallie <n0ah%n0ah.org@localhost>]

Hello, after compiling HEAD kernel/tools and thoes installing, what is 
the correct way to upgrade some sets, for example base.tgz

i was in /opt/tar with base.tgz and did a tar -zxvf base.tgz -C /
(probably should have used the -p), though... well.. no commands would 
run after that, i forget the exact error i was getting
but after that on boot the kernel started spitting out debug information 
etc and would not proceed.

any help is apreciated

n0ah
n0ah.org
sparc64/netbsd fan