I'd like to thank Eric Jacobs and Mike Hirst for their kind informative links that have given me a MASSIVE amount of reading (not complaining). I may be some time with that particular task :) Darren On 12 feb 2009, at 10.54, Eric Jacobs wrote: > Check out > > http://prestospace.org/project/deliverables/D13-4.pdf ¦ D P Ingram ¦ Ab Ingram Oy ¦ ¦ darren at ingram.fi ¦ www.ingram.fi ¦ ¦ ¦ +358 6 781 0275 (FIN) ¦ +46 8 5511 4995 (SWE) ¦ +44 203 014 3839 (UK) ¦ ¦ extn 8001 ¦