(Question) How can I go back to the condition before revert snapshot?

Hi,
I'm using Parallels Desktop 3.0 (5582) in Leopard.
Suddenly, internet didn't work in parallels...so, I tried almost everything...
However, it didn't work...then, finally I push a snapshot image button which I made 3 month before...
I didn't know it could removed my previous all work data in paralles.
Now, seriously, I need to comback before I pushed snapshot button. Can I?
I need my work data.
Please, let me know there are some way to get back.
Thank in advance.

FYI, I didn't make snapshot image just before revert snapshot.

 

Only way is to try data rescue 2 , or similar software, and try to restore previous hds file, In any case do not run Mac OS, as it can overwrite data, may be it is better to contact guys from data rescue(or similar)