Korg Poly800/EX800 Users

Hey y'all. I'm a total noob and I just bought a poly 800. The first 
order of business will be to replace the internal battery. I found a 
good tutorial on the process: 
http://www.pallium.com/bryan/polybattery.php , 
but it says it is specifically for the Poly 800II. Is the process the 
same or close enough for the original? I know I should be searching 
the previous posts, but there are tons of messages to wade through and 
I thought I could bug you guys for a quick answer. Could someone 
quickly tell me so or point me at a more relevant article on the 
subject. 

I'm probably going to do (or have done by a friend) the cutoff and 
resonance knob mods, but first things first. Where can I get some 
really cool looking knobs?

Many, many thanks

Randy