go to
www.gamefaqs.com
search for a game
next to the game title, there is a link called "FAQs"
click on the "FAQ/Walkthrough" link
with most internet browsers you can do a search on that page. windows internet explorer has this. Ctrl+F (push and hold Ctrl key, and push the "f" key, release). type in the chapter you're stuck on ( "2-4" , for example). hit the "next" button on the search window if there is more than one place that your searched word is.
or just ask, if you want to wait for a reply. i'm usually in a hurry so i go on that site.