My parents are setting up a small law firm soon and i think they should convert. what pieces of equipment to we need to do this and how will it all fit together?
Ask you parents what your "freind" should do. Tell them he want to set up a corporation to reduce liabilty for himself. He needs to know what papters to file and how to word them and if it matter in which state he files them. I'll bet you $10 you parents answer will be "Hire a lawyer."
Same answer here: Hire a profesional. It may not even cost you anything the people at the Apple store will set you up.
The big problem I see is (1) Security, ensuring private stuff remains private. Easy to do if you have just one computer and one user but in an office of networked machines that are connected to the Internet it is NOT easy. Also in a law office to cos of failure here is high. Ask your parents to think about what would happen if information got out because they didn't follow even the simplest industry standards for safeguarding their client's data.
#2 problem is related it is "backups". And no, Time machine is not the total answer. What if the building burns down. What about theft. I say "related" because theft means the data is now in some un-known hands.
Aside form all of that I'd think you'd want some 24" iMacs wired with gigabit Eithernet to a file server where the data is kept. Then you have a wellplaned backup system.
If the users need to be moble then gt MBPs and buy a nce big monitor fore each desk
I thing you will want a good laser printer that can duplex as well as a color printer.
Don't bother with wireless for the iMacs. Wired is MUCH faster. And if it is a new office they can pull the data cable when they pull the phone cables.
One more thing. Time is litterally money so buy some backup equipment. Can you imagine what a failed server would cost the office? If not backup hardware then a real good plan about how to instantly reconfigure one of the other desktop machines to act as a server
A better question, well aharder one is what kind of phones to install. Look into a small PBX built around comunity hardware and open standards. i like "IP Phones" and I like Asterik but hire a profesional to set this up. Asterix now runs well on Mac OS X and makes for a nice integrated phone/mail message system that can follow users even to remote locations
I'd go shopping for a consultent who could do both the computers and the phones.