Where do you find guides/walkthroughs for older games

Is there a place they host guides for older ero games?

I've been trying to play through some of Overflows older games, but I keep running into the same general paths when I know there are a lot of more.

I know of two places to get newer game guides.
http://www.foolmaker.net/
http://seiya-saiga.com/

I need to find a place that cover games that predate XP.