Add new workflow into Alfresco share

Question

I'm new to Alfresco/Activiti.

Our company is using Skelta BPM.NET (in integration with our self developed RMS) and now we would like to take a look into other BPM software.

I last days I found our how to create new workflow using Eclipse and Import them into standalone installation of Activiti.

Now I would like to publish this workflow into Alfresco share. Is there any easy way to do that? I was searching whole day on Google but didn't find anything useful.

And another question about installation: Is it possible to install Activiti with all it's webapps on the same tomcat, that alfresco is running on? That Apache Ant can build only standalone installation. So can this two application be merged?

Thanks for your info, Anze