VideoBox - Video Width

Hi, I'm importing videos (stored at Vimeo) to my pages using Videobox.
I can't see a way to change the width/height of my videos - using CSS just crops it.

Another thread addresses it here:
search.php?keywords=videobox+width

But they say the resizing needs to be done at "archive level" - does this mean I have to specify the video dimensions in Vimeo?
If so, I have the same video appearing at different sizes through the website, would I have to recreate the video at all these different sizes and upload them to Vimeo. People visit our Vimeo page independently and I don't want them seeing a whole bunch of identical videos there.

I may have misunderstood so please can someone help, it's driving me nuts!

Thanks

Is there a parameter in FE HTML? Try to figure it out. Don't know Videobox, but perhaps it's build with swiff (a MooTools class).

Hi, I realised it's at folder level in Video box. I.e. I had a folder called 'Portfolio' with all my videos in. I could change the width by clicking on the folder - then all the videos in that folder become that width.
So, I need a new folder for each different sized video on my site.
Not ideal, but at least it can be done and it's leaves my originals at Vimeo untouched.

Thanks