Setup home network

Hi.

I just installed a wireless network in my house. I have a server which i want to install zoho on. I've got three other computers in different rooms. My idea i to use zoho for mail, planning etc, and with zoho i will be able to use any computer in the house to check my mail etc. But is there any virusprotection in zoho? I am a total newbie when it comes to this stuff. But my teacher once said, -there are no stupid questions!