[prog] Bash script blues

[Kaitlyn]

Hi everyone,

    I'm having trouble with a bash script I'm tring to write.  The goal 
of it is to clean my $HOME by moving files by type into different 
directories and email what it did.

    One the the file types are .torrents, I want them moved into a 
directory, marked with a "_D" infront of each one, and all the ones that 
are already marked with _D should be deleted.  (I want to read which 
files are slated for deletion before they are deleted.

    The problem I'm having is making the spaces in the file names be 
replaced with an underscore.

    What I was trying was this:

    [code] for i in `ls -1 $HOUSE |grep .torrent` ; do mv "$i" `echo 
"$i" |sed s/\ /_/g` ; done [/code] (House is equated in the first part 
of the script)

However I get errors:
kaitlyn at rogue ~/bin/working $ for i in `ls -1 |grep .torrent` ; do mv 
"$i" `echo "$i" |sed s/\ /_/g` ; done
mv: cannot stat `this': No such file or directory
mv: cannot stat `is': No such file or directory
mv: cannot stat `torrent.torrent': No such file or directory
kaitlyn at rogue ~/bin/working $ ls
this is torrent.torrent
kaitlyn at rogue ~/bin/working $

I'm fairly sure the problem is that is breaks on spaces, but I'm not 
sure how to make it not break on spaces, google didn't have any answers 
that I could find, and I've spent about 45 minutes trying to make it 
work.  Not too sure what to do, so I thought I'd email this list to see 
if anyone has any ideas?

--Kaitlyn