In view of your experience with Wubi, your suggestion:
looks like something which could help many, feel free to add a link from the Wubi Wikipedia page to the Puppy Linux one.It might be a good idea to mention Puppy Linux on http://en.wikipedia.org/wiki/Wubi_(Ubuntu) as a similar project. I think Puppy linux is an excellent alternative to wubi. There are a lot of people who want to get handson experience on linux without repartitioning their harddrive.
Likewise feel free to start a thread mentioning the model no. of your problem laptop if a search for it via http://wellminded.com/puppy/pupsearch.html
doesn't produce a readymade solution.