I was thinking of buying a ThinkPad X61 Tablet PC from Lenovo. The video card it uses is the Intel GMA X3100 apparently, if I'm not incorrect. (If I am incorrect, someone please correct me.) I was wondering if I were to try and play an high-resolution video file, say something encoded in a .mkv file that has a resolution of about 720p, would this be able to do it well? I have heard mixed reports of this and am not sure if the graphics card in the tablet would suit my needs of playing high-resolution video files.