Building a network with a new server

[eamondo]

Hi Folks

I need to build a network for 20 people to use a CRM system for communications.

I have some questions for someone with the required knowledge.

• How much to set this up?
  
• Do i need to purchase a server and then host it for everyone to access?
  
• Is there any other solutions for this sort of thing?

Any help or a point in the right direction is much appreciated

Thanks

E