Hugh,
Please review the message posted by Bob and others a few days ago. It explains how to use the ChirpliveCD. If you follow his instructions you will get a bootable CD and you will be able to connect your PC to your UV-R5 and program it.
These are Bob's instructions.
Download the .exe version of the liveCD. Once downloaded, double click on the file. After a minute or so, a window will open. Click OK in that window, your CD tray will open and you will be prompted to insert a blank CD. Insert the blank CD, close the tray and click OK on the popup. It will burn the image to CD for you. Then simply reboot your computer to the CD.
The exe version is fully self-contained. It requires no additional software to make it work. The iso version on the other hand does require additional software. So again, if you are a Windows user and in doubt, download the Chirp_liveCD_23Dec12_32bit.exe file.
Hugh,
Don't worry about the daily versions for the moment as the chirpliveCD version will work just fine. Using the CD gives you a head start on getting your radio programmed. Once you have your radio working you can relax and look back through the posts and figure out how to get chirp installed and working directly from your PC.
The daily builds have some enhancements that may or may not affect your radio but right now any build you download will work with your radio.
Don't give up Hugh, you can do it and there are plenty of people here that can help you.
Regards
Lou VK3ALB