Thanks Juju & TIG,

Your advice and feedback have been a great help to me.

Thanks

Frank

I've just downloaded Sketchup 8 and then dowwnlosded the extensions V3.0.1 and instead of getting a Plug in icon I ended up with this error message :
Error Loading File SketchUcation.rb
(eval):235:in `require': uninitialized constant SketchupExtension::SCF::FOLDER
Any help will be greatly appreciated.
Thanks.
Frank