This is little self advertising . I used to search for PESpin tutorials on english and couldn't find none of them. Then I dig something by myself and wrote couple tuts. Not perfect but maybe it will be of some help to some noob. Includes Olly scripts and proper signatures for PEiD.

PESpin 0.3
http://www.reversing.be/article.php?story=20050726211417143
("http://www.reversing.be/article.php?story=20050726211417143
")

PESpin 1.0,1.1 & 1,3
http://www.reversing.be/article.php?story=20050811173217736 ("http://www.reversing.be/article.php?story=20050811173217736")

That was a fantastic tutorial on pespin.

I particularly enjoyed the method you used to correct the imports in V1.1 a very ingenous idea.