A couple ideas from Karen Schneider in the library:
Poets & Writers lists grants and awards every month – also, you can subscribe to email alerts from them
Newpages.com is an awesome website for independent literary journals
Erika Dreifus writes a terrific, FREE monthly newsletter, The Practicing Writer:
http://www.erikadreifus.com
http://twitter.com/erikadreifus
http://facebook.com/erikadreifusauthor

AWP also publishes grant/award/publishing info: http://www.awpwriter.org/