Paul
I am not sure where you could purchase the battery from but I have a
link here which will give you detailed instructions on changing the
battery.
It comes from the Mistic river site.
While it looks 'do able', depending on your vision, you might need
some assistance from a sighted person.
Here is the link:
http://www.misticriver.net/showthread.php?t=34257
Let me know how you go.

Cheers Daniel
 
Email daniel.dalton47_at_gmail.com
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Received on 2007-01-16