When creating a new environment based on one of CloudShare's VM templates, the machines' networking will be automatically set up with static internal IPs.
If you need your VM to make use of a public IP, you can set this in the Edit Networks menu:
1. Click Edit Environment > Edit Networks
2. In Edit Networks, select your VM and click More details
3. Change Inbound Access to Public IP and click Save
To save this setting to all future versions of your environment, take a snapshot.