Here's the final result:
Some stats on how the drilling was done:
1mm HSS drill bit in a standard mains power drill, mounted in my homemade CNC machine. The power drill nameplate says 2700 rpm max speed. I had it set to max, so the "spindle speed" was somewhere near that.
CNC driven by EMC2 from a IBM Thinkpad G40
G-code generated by pcb-gcode user-language program in Eagle 5.11
Feed speed: 90mm/min.
Drill depth: 2mm
Retract height: 1mm
Dwell: 0.1 seconds
I had to add these commands to the generated gcode output to get it to work correctly:
F90 (set feed rate 90mm/min)
Z-2 R1 P0.1 (set Z depth, retract and dwell, added to first drill line only. Values still apply on subsequent drill movements)
And of course, here's a video of the CNC in action...