Regarding a custom domain, our only constraint is that .trackvia.com will have to be a part of the domain becuase the application is hosted on our servers.  For example, your TrackVia account may be www.____________.trackvia.com, or any other domain you wish that ends with .trackvia.com. 

We can give you some html code that you can paste on your web site so that your TrackVia login is part of your own Web site - this is free.  Also, you can customize your account with your own logo and colors.