The biggest tip is make sure you mark all the parts before disassembly, the ends of the shaft are offset and if you put it back together wrong your steering wheel will be 180 degrees out!
take your time and work slowly, and when the joints are back in use a blunt chisel or punch to redo the stakes.
If you cant source the joints where you are let me know and I will put you in touch with the bearing shop I used to by them,
PS I got the part number wrong,
BM210 from
http://www.baileymorris.co.uk/
you can download the catalogue from the website, that will give you the dimensions of the joint
the same joint is used in Volvo and BMW steering shafts