Here is a guide to voice chat In Starlancer.
1. Download this http://download.cnet.com/Game-…000-18541_4-10266187.html
2. Install it.
3. Configure it.
4. Click on Host A Chat.
5. Click Start Game.
6. In the list Starlancer should be there.
7. Now blast yourselves to Oblivion!
Hope this helps
AwesomeMan out.