Its actually quite easy to do - you've already got all the things you need
Open up a command window (start->run->command)
Change to the directory you want to index e.g.
D:
cd mp3S
Then type the command:
dir *. /s /b > filename.txtWhat this does is take a listing of directories only (the *.), runs through the subdirectories (the /s), doesn't put any extra information in (the /b) and then saves the results to a file (the > filename.txt)
If you want the filenames as well you would use:
dir
*.* /s /b > filename.txt
Whereas if you want to sort them you would use:
dir *. /s /b /on > filename.txt
Where the /on sorts them on name. You could use /od for date, /os for size etc.
A full listing of the parameters DIR can take can be obtained by typing
DIR /?.
The difference between this and TREE is that tree gives the structure included in the output.
Who'd have thought - two old gits both replying how to use command lines