You should consider changing your business model a little, and start moving away from earning basic commissions and towards your own site and brand instead.
For example, check us out :
http://www.2Much.net
If you were running LiveCamNetwork, your chat models could continue to chat as they normally do, but with the added benefit of appearing on your own site, with your own brand, and your own billing account (CCbill for example). Furthermore, you can license your live feeds to other sites running our software, for any price per-minute you like, while your models chat with your own customers.
Your models won't need any extra software, won't need multiple computers, and won't require any extra bandwidth then they already have.
We offer licenses that you can either outright purchase, and offer a new rental license if this is what you prefer.
Check out our site at
http://www.2Much.net, then contact me to discuss details, demos, or trial offers.
Cheers!