Rename - insert spaces in between capital letters

I often get files such as DeploymentScheduleOmega.xls and I'd like to insert spaces before the capitals so that it's renamed to Deployment Schedule Omega.xls. Any ideas how to accomplish that?

There are a couple of ways to do it here:

It may be worth adapting them slightly to ignore the file extension, unless you know it's always going to be lowercase.

Thanks, I didn't see that. Also didn't know that it's referred to as CamelCase.