Please see my comment to the question.
Now, has at least one version of your code survived somewhere? If so, back up all what you can, take as much of the source code you can save, and run away from SourceSafe as fast as you can, and never come back. Theoretically speaking, if someone insists on using SourceSafe in some company, it could be a sufficient reason to sue such person for malicious activity and sabotage.
Need to know what to do next? Please see this discussion (including my answer):
Revision control systems, which to choose from?
Please see my past answers to related questions:
How can i structured to arrange source code when i create a new solution
] (in particular, in this one I explain why not VSS),
Needs some words of wisedom to set up and/or use a server
Make an unclickable form