When i first tried to edit avchd video my dual core laptop was no use, the play back would stutter and freeze etc. the same laptop would edit dv no problem. I now use a pc with a quad core i7 chip, a dedicated graphics card with 1.5GB of graphics memory and 12GB of system memory.Avchd, because of the compression codec is very cpu intensive when editing. I`ve done a fair bit of trial and error on this and found that sony vegas pro 10 works really well for avchd video as does adobe premiere cs5, I much prefer vegas as i find it intuative and quick to use. I think it`s a big ask of a dual core notebook to edit avchd movies, so it might be an idea to convert your files to an intermediate codec like cineform neoscene which is much easier on your cpu and retains all the quality of your video, or you could use your NLE to convert your footage to dv and then edit that, you will loose resolution this way but if you only intend the output for youtube it will still look good if you have the correct render settings, you will of course still have your original files to archive for future editing ! You can also use low res proxy files to edit, then render out at full res, I`ve never used this method so i cant comment on how effective it is. Do you intend editing while you are on the road or back home ? If at home, I would take a cheap note book on your trip and a portable usb powered hard drive (or 2) to store the avchd files, make sure your note book will power the drives as some notebooks have the power bus disabled to increase battery life.