A Few extra pointers
I would get the Slackware 10.1 iso discs 1 and 2.
Discs 1 & 2 contain the actual distro. Discs 3 & 4 contain the source code, so 3 & 4 aren't vital.
Be prepared for a little init script hacking, as when you reboot, you will be thrown to a console login.
Login as root, using the password you set during the install.
You will need to set up X to work. try running $gdm and see if it starts. If it does, then gdm has written a basic xorg.conf that has found and guessed your settings using the 'vesa' driver. This is a basic graphics driver that works with **most** (not all) systems. If this is the case, go to step 3.
If it complains of an error trying to start x and kicks you back to a prompt, you will need to run;
This is a script to set up X that you might have used before with XFree. Answer the questions, and try to start x again. It tends to be trial and error sometimes with newer cards and doesn't always work first time. Try and find out your monitors horizontal and vertical refresh rates.
Once you have a working X, you will need to edit the /etc/inittab file to tell the system to start X on boot. find a line that looks like:
# Default runlevel. (Do not set to 0 or 6)
Change the 3 to a 4 to start X on boot.