VLAN Setup

Of course, you need to be behind a security device (firewall) and not be using public addressing on your hosts. Is the business center 10 different clients (as in 10 different businesses) or 1 business with 10 users?

its 10 different businesses, each with several pcs, servers etc. some of then have asked for a static ip for setting up exchange and remote access.

So then the question is where does your realm of support end?
What I mean is, you could go in and offer this public access and let each of the businesses fend for themselves with their own router/firewall to secure and NAT to non-routable subnets (i.e. 10.0.0.0, 172.16.0.0, 192.168.0.0). Or you could be the one to provide that firewall and create VLANs for each of the businesses. You will need a security device that can handle VLANs and rules so that they can route to the Internet while restricting access to each other. You also will have to have a switch to create these VLANs on and "trunk" (a Cisco term) those VLANs to the security device.
I use Sonicwall and they just came out with a NSA 2400MX apliance that I think has everything you will need built into one device (switch and security appliance). I would engage a respected reseller to discuss the hardware and it capabilities to see if it fits your needs.

Thanks for that. I will look at the sonicwall. So will it also allow me to pass on the static ips to each vlan or would I need anything else?

Also, it only has 24 ports so would this mean I could have 24 vlans each with a switch running off a port on the sonicwall?

According to the documentation on this unit, it does support up to 25 VLANs. I would assume the capability to pass your statics down to your individually created VLAN interfaces as with any good firewall, but again, since I don't have this particular unit, I cannot speak with 100% certainty. Get with a good Sonicwall reseller for specifics.