I went through the process to remove the files that the forum post recommends AFTER applying the registry settings and upon reboot Win XP gave me all sorts of missing file errors. So if you think that you can just apply the reg patch and then remove the files from XP and -Viola! you have a pruned XP system- Think again. You will blow your OS out of the water! I did. Luckily , I already have a small nLited Xp install so it was just a matter of reinstalling that - took 8 minutes or so . No biggie.
I have my install down to about 775 meg with no pagefile. I am hesitant in removing more components.