Starfall helps with letter/sound recognition. http://www.starfall.com
Nick Jr. provides interactive and educaitonal games. http://www.nickjr.com
Fun games to strengthen keyboard skills, memory, literacy, and many other academic areas. http://www.MotherGoose.com
Plenty of online stories, online activities, parent's page, and crafts for you to explore. http://www.storyplace.org/preschool/other.asp
Name, number, and alphabet handwriting practice pages. http://www.handwritingworksheets.com