[Newbies] Walk directory of files?

[Charles Hixson]

What is the best way to walk a directory of files?
It would be nice is I could just:
Get next file?
exitst?  ifFalse then done
match pattern?  ifFalse, then go to first step
return file

This requires that the method track where I am.  I think I can figure 
out how to stuff them into a collection, and return the entire 
collection of matched files, and perhaps that's the right answer, but 
that's not the way I would do it in Python or Ruby, so perhaps it's also 
not the way to do it in Smalltalk.

Also, if it matters, the files will be utf-8 files, many of them with 
BOMs. (Well, not really BOMs, since it's utf8, but the utf8 header.)  
Does Squeak recognize BOM headers?

-- 
Charles Hixson