Looking for lots of words in lots of files

[brad]

Just wondering if anyone has ever solved this efficiently... not looking 
for specific solutions tho... just ideas.

I have one thousand words and one thousand files. I need to read the 
files to see if some of the words are in the files. I can stop reading a 
file once I find 10 of the words in it. It's easy for me to do this with 
a few dozen words, but a thousand words is too large for an RE and too 
inefficient to loop, etc. Any suggestions?

Thanks