Hi mossmanfly
You say you will not need DV-in as you will copy to DVD. Well DVD has compressed data, so if you need to do further editing etc at a latter date you will loose quality. I personally keep all the origional tapes and also copy the final edit back to a new DV tape - Belt & Braces
All the Sony camcorders do tend to be very good. If the TRV-14 fits the bill for you then go for it. I would suggest perhaps going to a local Jessops and holding the cam to see if it feels ok to hold and you can get to all the buttons etc ok. Also take along the internet price you have and they will pricematch it for you. Then if the worst happens you have a direct link to a person for getting a repair and no P&P charges.
What OS are you running on your PC? It is a very good and modern spec so I will assume it is XP. If it is then you will already have editing software supplied - MS Movie Maker. This is overly basic and you do need to get onto the MS web site and get the free update to MM2. This will be a very good starting point as it is easy to use and will do everything you need, to start with at least.
If you do not have XP then one of the most popular editing progs is Pinnacl Studio 8. It is not too expensive and has a lot more features than MM2. Or if you do not already have any authoring progs for DVD then I would recommend Ulead DVD MovieFactory 2. This will do everything from capture, to editing, to creating the final DVD. I use it and find it very easy and gives great results all within a single interface, so only 1 prog needs to be learnt.
You will of course also need (if not alread installed) a firewire card and DV cable (not supplied with the cam, but should be if buying a firewire card) to connect the cam to the PC.
DV footage takes 1Gb of disk space for every 4 minutes captured. So that is 15Gb approx for every 60 minute DV tape. I would strongly recommend that you have 1 disk that only has the captured footage on it with all progs installed on the other. This will improve performance and help to prevent problems such as dropped frames during capture.
All the above has more than likely created even more questions. Please feel free to ask away or do a search of this forum as there has been many other before you and you might just find your questions have already been asked. If not though, we are here to help.
Good luck,
Mark.