Phone Lists

[olds]

I have to maintain a couple of different phone lists.
Some of the numbers are on multiple lists.
What software can I use that once I edit an entry, it will automatically change the same entry on the other lists?

 

[Chrishuff1]

Excel? lol I'm sure it wouldn't be that hard to write a short piece of code that if say cell A2 changed on sheet 1 then cell B2 on sheet 2 would follow suit.