Yeah thanks - I've done that, it's a really useful tool. The thing I'm most worried about is either damaging the casing of the laptop or there being compatibility issues, but I guess I can always put the old RAM in in that case. Will there be a significant difference in video editing going from 8GB RAM? I have a wicked processor and graphics card but I'm guessing the lack of RAM is what's making the video preview in Premiere lag so much