Theoretically, yes. Actually, I'm not sure. The following is from VSS 6 help:

Allow Multiple Check Outs
Controls whether many people can check out one file simultaneously. Under ordinary circumstances, only one person can have a file checked out of VSS at one time. If you select this box, however, VSS allows many people to check out the same file. When the first user checks in the file, VSS updates the file; thereafter, VSS merges in all subsequent changes.

So, theoretically, you can have both developers check out the class library, work on their respective classes and then check in and VSS will merge the versions. I can't say how well this works because I haven't been willing to risk trying it

This said you might try a different approach. Our team develops new classes outside of the master class libraries. When ready the class is presented to the team for testing and evaluation. Once accepted the appropriate class library is checked out, the class added to it and then checked back in.

HTH

>I have a class library under VSS control. How can I handle the situation where I have 2 developers that both want to work on separate classes that exist in the same library? Can this be done?
>
>Thanks,
>Paul