HI, i was wondering wether your system can have multiple lines connected to it via VOIP?

Yes, Voicent predictive dialer can have multiple lines. Each line, when Skype is used, corresponds to a running Skype instance. For multiple lines, you just need to run multiple Skype instances.

I have a small call center 2-5 agents. How do I setup predictive dialer so calls are forwarded to my available agents?

This is one of the Predictive Dialer FAQ. The answer is copied here:

First, you need a relatively powerful computer to install Voicent Agent Dialer Enterprise Edition. This is the computer that dials all outbound calls and manages remote agents.

Second, you need sign up Skype for the phone service. It is recommended to have a few more phone lines than the number of agents. (You could use regular analog telephone lines with voice modems, but it is not recommended for predictive dialing)

Third, each agent should have a computer to receive screen popup and phone audio. When a call is answered by a live human, the predictive dialer will find an available agent, and alert the agent with a screen popup, and also redirect the phone audio to the agent’s computer. The agent can then talk to the person using a headset.

For more details, please see Predictive Dialer and Remote Agent Setup Guide.

Windows Vista is more restrictive and so is Skype software. It is more tedious to run it under Windows Vista, but you should still be able to run multiple instances of Skype. For more details, please see an example to run multiple instances of Skype.