This function is not available in Premiere Elements.
Premiere Elements also does not do well with mixed video sources, and we highly recommend against mixing camcorder video and FRAPS or similar sources in the same project. It almost always leads to problems.
For best results, convert all video to a common, traditional camcorder format before you bring it into your Premiere Elements project.
Hi, thanks for the reply! Then I'll have to run the semi-transparent trick and that'll do for now.
The screenrecorder I've been using is a SideKick HD from Fast Forward Video and it actually records in "full frame" Quicktime. I haven't started to sync all these resources yet, only the Camera DV so far. I'll have a look if I can convert the Quicktime in to .avi instead, maybe that would work better?