I'm actually Mandy and not really 'Sky' and it was me who posted this thread initially. Many thanks to you all for answering my question about the Kx batteries. Have taken notes on the info given. The delay in acknowledging your help is due to me being unable to get back into this site! It throws me out every time I put my login details in (and yes, they were correct). I just gave up and turned myself into someone else to say 'Thankyou'!!
The site is so interesting and full of help so I will try again as 'Sky' in future and see if Pentax likes her better!