Nice mod....
However, I would SERIOUSLY NOT RECOMMEND USING IT! Reason for this is actaully documented at the very bottom of the page. Notice that he successfuly got his 5V line up to 5.5V (no load) and 5.1V (under load) BUT his 12V line is now +13V. VERY BAD!!! (unless you like smoking CDROMS and HDD
)
Using the mod with the potentiometer that he was talking about could result in much better voltages on all rails with fine adjustments but using just the 1.5K OHM resistor would not be a wise idea.
That is my 0.02 cents...
Thanks for the document though!!