Many thanks, I'll give the stored procedure and separate function a go. As I said before, this is my first attempt at anything on an SQL server, most of my...

IF SHA's or GUID's had been appropriate then they would have been used!

Making comments like that when knowing nothing about the requirements does not seen that bright to me either!

Is there a way of doing that from withing managed code (CLR) using VB.NET. I have built a function to do all the calculations and am now looking at accessing...

Cheers,

I have a look at that.