Replacing Spaces w/ Underscores

[terramarinc]

When I download a JPG to my desktop, I would like Hazel to replace any spaces in the file name with underscores. Is this possible? Example: I download a file called "03 05 2013.jpg" and Hazel automatically renames it "03_03_2013.jpg".

[Mr_Noodle]

Use the rename action and in the pattern, click on "name". One of the options is to do text replacements which should do what you want.

[terramarinc]

Thanks. I'll give it a shot.