How to make video previews?

I want to upload some clips i got last night only thing is I don't know how to make previews for the clips. Lol sorry for being a noob but if someone would show me how that'd be great.

There was a thread for this, not sure what it was called. footfetishguy posted it pretty often.

I use this one.

Code:

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http://www.videohelp.com/tools/Video-Thumbnails-Maker

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Here's 2 ways to make pic previews. The chesire cat 1 click thumbnailer.
http://www.gassyerotica.net/fartforu...hlight=chesire

And the image grabber site.
imagegrabber.net