>Hi Bonnie, what I was asking you was, "is it the correct design decision for one interface to inherit from another ?", I've always been of the mind that interfaces should be kept clean and simple - but I've been wrong before, thanks for replying

Probably, like Perry says, design-wise it doesn't matter. Personally, I agree with you. We have a lot of interfaces in our "Framework" (20 or more) and it looks like only 2 inherit from another interface.

~~Bonnie