Not my installation, but a visitor, 'Zac' has kindly updated an earlier post with his experiences. If you are considering upgrading to Windows 7 please have a look at Zac's comments on my post here;

http://wowbagger.blog.co.uk/2009/10/24/windows-7-upgrade-advisor-output-7235152/#comments

If anyone else has installed Windows 7 I would be pleased to hear how things went.