I'm merely posting this for the uninformed like I was before I had it reccomended, but you can get text readers on the net to read your work out aloud for you and it also has the ability to read whatever is on the net. Text reader for your PC - TextAloud is the text to speech converter that reads emails, documents and more. I'm not sure whether the different voices on there work or not, (as in they're not free) but you can definately find more for the programme by searching google. It's the best programme I've found anyway. Useful for editing.
Text readers are nice to have, especially for those like me that after reading the same section of a story over and over, I start to read what should be and not what is actual. Sandy