"And it's hard to beat situational "opportunistic" learning when it comes to medicine; I'm sure even Andy Lockey will agree with me on that count!" Oh....go on then (begrudgingly) ;-) Seriously, totally agree. It's just a little bit difficult to structure this. But then, who said this job would be easy....! Andy Totalise - the Users ISP ---------------------- To become a member and a shareholder - visit the site at www.totalise.co.uk