DON,
It's easy to create a new company by logging into the application by
selecting "Your Company" option in the Login Screen.
Once logged in, either modify the dumy business partners to your
company's business partners.
If you have made trial entries in Journal Entry features, then it
would be difficult to delete some masters unless you delete all the
entries in Journal Entry.
There are several enhancements being made and a better version with
easy start interface will be available in first week of November.
More help may come by from the experts here!