Do you have photos of the damage that you could post online here?
INITIAL THOUGHT: If the collision was hard enough to damage the wheel, it may also have bent or damaged the front forks. It would be pointless to replace the wheel alone if the forks are damaged.
FRONT WHEEL OPTIONS: That being said, If you want to only address the wheel, I would look online for a used replacement wheel (eBay, Craigslist, etc.), or assuming the hub is still OK, you could have a new rim (upgrade to alloy) laced onto the hub by Buchanan Spoke & Rim (http://www.buchananspokes.com/).
I may have more suggestions if you can provide more details and photos.