Hi John,
Don't worry I to come from the days of VHS and SVHS, first computer was a 166KHz Pentium running a Q-Motion card and Premiere 4.2, it cost an arm and a leg.
Something you should be aware of with Corel ProX2 is not to use "smart render" if you are doing any high definition video it has some problems that they have not resolved, lots of talk about it on the Corel website, we had a discussion on this problem on this forum a few weeks ago, it might help to check out what was said,
http://www.videoforums.co.uk/avchd-h...d-files-3.html
Super C does some good encoding in the Quick-time format that might be good on Elements 2.
I don't know how E2 would handle the h264 codec though and some of the older programs didn't edit mpg so it might limit you to something like DV AVI, I just wondered what codec pack you are using on your computer I found I got the best results with playback on my computer using the Combined Community Codec Pack and the Zoom Player that came with it gave good playback with deinterlace selected in the ffdshow section.
I don't think it is that unusual for computers to crash when playing some types of video, I've had to disconnect the power and remove the battery from my Toshiba Laptop to get it up and running again on a couple of occasions, they call it bleeding edge technology.
Bryan