Also, visit
Gibson Research Corporation for his fixes for a few security issues. I\'ve mentioned this site before, but his stuff always floors me.
Microsoft\'s patch for the help-file deletion problem = 1.35 megs
Gibson\'s GUI patch (written in assembler) = 30 kb
He\'s got a few other patches for XP in there, to turn off some open sockets and such. I\'ve been following his work for some years, and have yet to find anyone who programs as well as him. His spinrite program is one of the most amazing pieces of code I\'ve ever seen in terms of size/functionality (spinrite will actually fix physically failing HDDs, and it\'s smaller than one disk).