1)
2)
a) For my downloads
b) 3) a)Goto: http://slackbuilds.org
b) Download pkg: ie. nvidia-legacy71-kernel.tar.gz
c) Source Download: NVIDIA-Linux-86-71.86.09-pkg0.run
4)
a) b)5)
a) b) c) (to log back in as root so there is no mistake)
d) e) f) g) h) If u get an error that says no such file or dir then use the full path: tar -zxf /usr/local/src/nvidia-legacy71-kernel.tar.gz
i) Now you have a folder:nvidia-legacy71-drive
j) k) l) M) m) N) Pkg is created move to /tmp: nvidia-legacy71-driver-71.86.09-i586-1_SBo.tgz


Questions From this point on:
1) what happened to: NVIDIA-Linux-86-71.86.09-pkg0.run - downloaded from NVidia site?
2) Do I simply cd /tmp and installpkg nvidia-legacy71-driver-71.86.09-i586-1_SBo.tgz
(I know howto configure xorg.conf - this is non issue)
3) Does the SBo extenstion require special install commands?
4) Does nvidia-legacy71-driver-71.86.09-i586-1_SBo.tgz initiate the 'doinst.sh' when u do installpkg nvidia-legacy71-driver-71.86.09-i586-1_SBo.tgz

FYI i cd and ls so much to make sure everything is where it needs to be. Not looking for shortcuts just clarity.

I'm probably not the best one to comment on Nvidia drivers since I don't use an Nvidia card, but here is what I (think I) know.
1) I don't believe it is compatible with xorg-server 1.6 if you are using Slackware 13.0.
2) Just run "installpkg /tmp/nvidia-legacy71-driver-71.86.09-i586-1_SBo.tgz"
3) Nope. The extension is just a requirement for slackbuilds.org slackbuilds. However, there are variables you can pass to the slackbuild to customize it for your architecture or to suit your personal preference. The two that pop into mind are the ARCH and PKGTYPE variables. There's others but just look at the corresponding slackbuild and you should be able to figure it out. Also, take note if there are any special variables that can be passed to the slackbuild, usually mentioned in the README.
4) Yes, installpkg will perform any actions in a doint.sh file if it exists.

For myself, I don't comprehend what you're trying to accomplish and I've installed nvidia from slackbuild as well as from the nvidia download site and it was fairly different than what you're doing.
As to where the nvidia driver went, I dunno how you downloaded it and I don't see where you said, but I'd check my downloads folder and wherever you were when you downloaded it.
I do most of my work from a gui, primarily because I try to type at mach 2 speed with two fingers and am more than prone to error.
I figure if I'm not in a terminal, I can't futch something up.

I didn't lose the Nvidia Driver Kerenl... I download everything from slackbuild. First the nvidia-legacy71-kernel.tar.gz then moved it to working folder and untarred it. Then I downloaded NVIDIA-Linux-86-71.86.09-pkg0.run also from slackbuild.org as the source into the slackbuild folder. chnged to root and chmod the slackbuild and then ran slackbuild.
This did not install the NVIDIA kernel. I woundup having to run it after I ran the slackbuild.. I must have missed something .. but it worked this way.
I thought the slackbuild wld install the source??? In the read me notes it said both had to be installed. No matter it worked. I've being leaning slackware CLI ever since i started with slackware. I don't find the GUI much easier.

FYI from CLI you just have to type everything once the use the up arrow at prompt and cycle to the command u want to use or edit for reuse

Yes, of course it did not, because that is not the purpose of a SlackBuild. SlackBuilds are supposed to create packages, not to install software.
You have to install the resulting package on your own!

Usually, Slackbuilds create the package in /tmp, then you have to install them