phone book

I need a program for modyfikaction my data from my phone book on a computer. I have so many numbers and addresses and it is very hard to modyfied it directly on the phone. I use PC Suite but in this case it sucks. Can you advise me some good program for it?

I really do not get the prob....

PC: Sync your Phone with MS Outlook by using PC Suite
Mac: Sync your Phone with "Adressbook" by using iSync

In both cases it works properly.... so what´s your prob ????