New to Podcasting

My boss is toying around with the idea of creating some podcasts so that some of the higher-ups can communicate what's going on with our organization to people that they don't see constantly. The issue though, is that we have people all around the U.S. and everybody is hesitant to install something like Skype on their PCs.

My boss was toying around with the idea of having the big-wigs literally phone the podcast in. I'm sure it could be done and recorded over the phone but I'm lost as to how to start researching this.

Any advice would be greatly appreciated.

Thanks!