Automate your drive re-organizing with Download Mover
While Download Mover is no longer actively developed, it's still good at what it does. Download and extract the zip file and launch the executable, and DM will ask you where and what you want to monitor. Specify the interval for checks and set your notification options, and you're done.
You can specify multiple folders to watch and specify different targets for each file type you add. I often forget to change my Firefox download preferences to save things in my d:\downloads folder. Setting Download Mover to scrape .exe and .zip files into the proper directory keeps my desktop nice and tidy with no interference.
If you've got another automated tool for handling chores like this, please share it! I'm always on the lookout for another app that can tackle tedious tasks like directory cleanup.