3B1 battery replacement

[Yong Ren]

	The battery in my unix-pc is dead for months. I opened the cover up
and found that the battery is soldered on the board. What is the proper
procedure to replace it? I know this must have been discussed on the net 
quite often. Well, I didn't read those postings carefully since I thought
it still had several years of life ahead.
	Thanks in advance.
	
	- yren at phoenix.princeton.edu
	- yren at pucc.bitnet