When you bring up the Find window, just leave kind as any, then in the "Search for:" box at the top type in your search term, and also add what you want to exclude with "NOT" and whatever it may be. Thus if I wanted to find all files containing "geranium" in the file name or content, I would enter this:
geranium NOT Folder
I would get all files with geranium in the file name, plus all html files mentioning geranium, as well as text files with the word in the content, but would not get any folders. If I wanted to also exclude certain other things I would arrange window in List view, click on the "Kind" column and note what other files are showing up that I'm not interested in. For instance, suppose I don't want aliases either. I would then amend my Search for field to exclude those as well:
geranium NOT Folder NOT alias
You can refine things to your heart's content using this method.
Francine
Francine
Schwieder