Hi All,
Many thanks for the replies. Yes I've performed the installation as HP specify on their website & in the readme file included in the download, but it doesn't make any difference. I'm glad its not just me that has experienced no gain from this update.
I did look in the display options in the Control Panel but there is not an option for setting the colour depth
It does specify that it may only work in certain applications including PocketIE and HP Viewer but as yet I haven't found a difference.
I will investigate the tweak that Desertway has mentioned and see if that makes a difference.
Again, thanks all for the polite and kind replies.
Cheers,
Pete