I wouldn't give up yet on the rim.
You can download the Barnett's Manual chapter on wheel truing and repair (including straightening bent rims) for free. Click
HERE, and scroll down the page to "
Download Chapter 17: Wheel Truing and Repair". Right click on the link to download the 904 kilobyte PDF file to your hard drive. Follow the rim straightening instructions to see if you can salvage it.