It should work fine, if your computer monitor has an HDMI input. If it doesn't, you'll likely want to buy an HDMI-DVI cable (assuming your monitor has a DVI input), which should also work. It largely depends on the age of your monitor. If it's an LCD, there may be a little fiddling required, but it should work fine. If it's an older CRT, it's probably not going to work, but since you said 720p I'm assuming it's LCD. I'm also not aware of how much of a problem the whole NTSC/PAL thing will be.