This might just be me, but wasn't there a big discussion here not too long ago about how telling people to just "use Google" or "LMGTFY" is fairly rude and not any better than just spamming or insulting others? If you're going to type a reply, take the time to actually do the Google search yourself and see what comes up. For example, when I tried a Google search I found practically no decent results at the top.

You could probably just create several different health bar images in Gimp (empty, full, and everywhere in between that you're going to use) and overlay those in Sony Vegas.

BG is right, create a picture with a photo editing program, gimp is free, you can google it, don't use windows paint though, because the background needs to be transparent, and I don't think paint supports that.  Then you will have to import that image into your video editing program, which needs to support multiple layers of video.  If it doesn't, like in windows movie maker, then you won't be able to do it.  Just put the image over top the video you want it to be on, and change the image for every time it needs to change.

You know it cause I told you...

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