i have to say that by far Final Cut Pro is the best. It is very easy to learn, yet very powerful. There is also an Express version that is a bit less expensive. However, even something like iMovie does a surprisingly good job with editing and such.
However, these are for macs. This video joiner software appears to be windows, so let me make some suggestions there as well. Personally, I love Sony Vegas. It is such a powerful app, but a bit pricey. For a beginner, I would highly recommend Pinnacle Studio.
http://www.pinnaclesys.com/PublicSite/us/P...io+version+10_5It is a really great, easy, all-in-one package.
let me know if you need any help, i use a lot of the video apps for both pc and mac.
livestrong