I was working ona project when the computer blue screened on me. I thought all that I would loose would be the work done so far but when I restarted the computer, my entire file didn't want to work. THe message keeps telling me (this is not a proper ESP) is there a way around this or have I lost all my work?

There are two kinds of people - those who do backups regularly, and those who don't yet.

Try to find a file named pukcab.bak and rename it into .esp There's a chance it's yours.