:)Grant, that's the join I was looking for, thanks.

I could use it in the same VBS you posted earlier, absolutely. The chellenge I am facing now is reporting on this.

I...

Grant, very useful article, thanks. One question I have is how to report on this stuff after creating a rule? When I try to use if in Generic Performance reports...

Thank you:)

I take it the Custom reports menu appears only after installing SP2 on you SSMS, since I don't have it now?

you're right, it did it. I was confusedby the yymmdd format in BOL, because what I needed is yyyymmdd

Thank you

any thoughts on that? answers? concerns?