Thanks teylyn,

I've been reading the forum rules and realise that I owe another apology. Sorry, I should have advised you that I'd posted the same query elsewhere late last November, and a reason as to why it happens was explained. The workaround provided was go back to Excel 2003! Even tho' doing that was ok, I still reckon on finding a better solution for 2007 & 2010.

Here's the link: http://www.experts-exchange.com/Soft..._24934236.html

I had one go at altering a *.png in Photoshop and saving it 'for the web' but it made it worse.

Max