Thanks, don570. It works.
I don't know what kind of pen functions other people want, but I am happy just to have the stylus work like a mouse.
The mouse cursor moves with the stylus movement whenever the stylus is within an inch or so of the screen. The little clicker-button on the side of the stylus acts as a right-click. I downloaded the xvkbd 3.2 virtual keyboard .pet, and it works too.
I am sooo happy that I don't have to bang away at this anymore!
OK, so this is what I have:
M1300 tablet computer. Pentium M, "1000 MHz"
512 Mb RAM
I replaced the hard drive with a 2 GB SD card in a SD to IDE adapter, for power savings, resistance to physical shock, and just because.
1. Booted to USB with Lucid Puppy 5.2.5
2. Used the "Universal Installer" to install Puppy to the SD-IDE drive. This was a bit of a reach, because I had to do some odd things with . . . hmmm . . . I forget. Something about the way Puppy formatted the disk. In any case, it's not really important for making the tablet part work.
3. Now, I boot to the SD-IDE drive with a USB wireless keyboard attached.
4. Installed the wacom-0.8.5-10-k2.6.30.5.pet package that was linked by don570 above.
5. Re-boot, just to be safe. Probably not necessary.
6. Opened terminal window and did the "depmod" and "modprobe wacom_w8001" thing, as don570 described.
7. Edit the xorg.conf file per
iteration69's description, adding the three "Input Device" sections pertaining to wacom and the two "Server Layout" lines for "stylus" and "eraser".
8. Re-start the X-server
9. Now it works!
I didn't have to modify my rc.local file or tell Puppy that I was using a serial mouse or anything else, as far as I can remember. It is just working.
So, whoever else is looking to make their M1300 stylus work like a mouse, this seems to be the way.
Any comments or additions?
[EDIT Jan 25] I can now confirm that this works from a "clean" install of Lucid Pup 5.2.5