Sorry for the double post but this is a much better link than the previous one.
http://www.chipzone.com/installation/soldertips.cfm
This guy has specifics on everything including prep.
A few of those like the thicker strander wire apply to PS2 chips.
15 watt soldering iron with fine tip
0.10 mm solder tip (this is very small)
30 or 35 awg kynar or similar wire
Thicker stranded wire for 3.3v, 5v and GROUND: 22 awg or similar
flux paste to help soldering
De-solder braid
A safety razor blade & Blue Tack to hold the blade in place
toothbrush
Read the page for more info, hope that helps