Can't print over network between WinXP & Win2K machines

What I've got:

A Dell Dimension 8100 desktop running Win2K;
An HP LaserJet 1200 connected to the above via USB;
An IBM R40 Thinkpad running WinXP;
A D-Link wireless router connecting the 8100 & R40 via
wireless network;
NO printer server hardware/software.

Using XP's "Add Printer" wizard on my Thinkpad seems to
add the LaserJet to its list of available printers just
fine, but printing fails with a generic print job
status "error." One-page test prints show up on the que
as MULTIPLE pages, so it looks like a driver problem.
However, no matter how I set up permissions for the
LaserJet on the 8100, I cannot manually add or change the
printer's driver from Thinkpad---the "New Driver" button
is always grayed-out.

I have a spare Dell laptop running Win2K, just like the
8100, and using the "Add Printer" wizard, I'm able to
print just fine from LaserJet over the network.

Help!

GDogg