Blog of the hour..
edublogs have this site listed today, as one of the sites of the hour, and i agree! Its got lots of downloadable / interactive resources, grouped by curriculum area, some of which have good application to special education. I’m putting the blog site in my links down belw, but here it is in case you are desperately keen to get there and cant wait to scroll down the page!
Free resources from the Net blog
Also, one of the links i explored is below – a page of freeware software for PC, Mac, Linux etc that teach basic skills.