Hello rubyg,
The Microchip PIC18F45K20 device is not supported on the Dataman-48UXP programmer and we currently have no plan to add it to the support.
In order to program the PIC18F45K20 device I would recommend the Dataman-48Pro2C. I believe the Dataman 48Pro2C to be the best in its class on the market worldwide at the moment. The Dataman 48Pro2C offers super fast programming speeds and includes advanced features such as ISP capability, USB 2.0 interface and comprehensive software compatible with Windows 2000, 2003, XP, Vista, 7 and 8. The Dataman 48Pro2C supports over 74,000 devices which is updated every 3 - 4 weeks with each update adding 200 - 300 new chips. Support can be added for missing devices quickly and typically free of charge.
The programmer comes as standard with our 3 year parts and labour warranty, free life-time technical support and software updates. The specification and further information can be found on our
website.
Best regards,
Neil Parker
Dataman Programmers