I found this site which has some great pictures/steps in replacing valve seals. Small Block depicted but it applies to all others.
It was created by Joe Fisher and posted on the Corvette Forum web Site.

Enjoy

http://temp.corvetteforum.net/classics/plaidside/Valve-Seal-Install.shtml

Thanks, I was looking for something like this. My new seals did not come with any plastic protector sleeve.