Nevermind -- i found a good tool for it,
ZUploader, and added support for it to Screenshot Captor.
ZUploader is a free open source uploader tool which works with imageshack, dropbox, flickr, ftp, and more, and is associated with the
ZScreen project, a good open source screenshot tool in it's own right.
ZUploader is donationware -- please donate to them if you find their tool useful (you'll find a donate button in the ZUploader window).
Integration with Screenshot Captor 2.99.02:
From Screenshot Captor you will see help for installing ZUploader in the options
- A checkbox to auto queue in zuploader after taking a screenshot
- A menu item in tray to upload last file
- A menu item in the SendTo menu of the post capture pop-up dialog
- A tool menu item in the main Tools menu.
In short, just install ZUploader and Screenshot Captor will know how to use it.