Do you know of a free or inexpensive phonebook program?

The current solution we have for a phonebook program at work has officially hit a dead end. Do you know of a free or inexpensive program that works well, is friendly to look at, and is friendly for people who might, say, still need help attaching something to e-mail?

I know I can look up a million online, but I’d really like to hear if any you use one and if it works well. Personal testimony goes a long way. Thanks!

We have PCs.