I have been replacing the caps on older motherboards. A very good idea i found to clean the connections of excess solder is here.http://www.usbmicro....5FDFF29EA1.html
I also use a high wattage 60 watt pencil iron to heat the area up faster. The 12 to 25 watt irons can take a long time to heat an area up and could cause nearby damage by heating up so slowly.http://www.action-el...eller.htm#Irons
One problem i have had with some caps is that replacing the Choyo 1000uf 25 v caps with nichicon ones is that the nichicon are about 1/3 larger in diameter than the choyo's. In some close quarters they will not fit in place. By leaving the connections long and bending the caps outward so they all will fit. It looks funny because they stick up quite a ways from the MB but so far does work.
heres a list of cap manufacturers and what they have.
The lower the ESR, the higher the grade. (In the following table, the lower a capacitor is placed, the lower the ESR, the higher the grade.)
Nichicon NCC Rubycon SANYO Remarks
VZ KMG YXA MV-CZ 105C General Purpose
PW LXZ - MV-CX Miniature, Low ESR
HE KY YXG MV-CA K6, K6-2, P2, P3 grade
HD KZE ZL MV-WX K7, P3 grade
HV KZH ZLH - Extra long life, miniature, Low ESR
HM KZG MBZ MV-WG K7, K8, P4, P4+ high quality grade
HN KZJ MCZ - Ultra Low ESR
HZ - - - Lowest ESR of all electrolyte capacitors
I'll try to add more to this as i remember them. These just come to mind because i'm doing the cap thing quite often.