Hi,
... to upgrade workbench do I require to do a complete format and reinstall or will it update over the top as I don't want to lose the 2000 whload games that have been installed on the compact flash (which probably wont arrive till next week).
No, just choose install and alter the location, install hd will try and format, so regular install, then it will back up everything system related if you so choose if i remember correctly.
