from wat i been trying all the time to make sure my line is stable..

1st i check my own ip..
cos all among all ip address, some are good(stable) and some are not..for you area u try to look for it.. for eg. some starts with 61. xxx.xxx.xxx something like that and some wif 62.xxx.xxx.xxx something like that. as i know ip with 61 is much stable..

2nd i check my own ping
u can try check by type /ping 202.188.0.133 -t in the run command.
the lower and stable ur ping is the better. the higher means the laggier ur line is.. for eg. if ur ping show 15,18,19,20,15,16,18 and etc means ur ping is stable. same goes for those other number.. but if ping suddenly from 19 jump to 150,160,200, or timeout means ur line is not stable. anytime u join or u host game definitely will get dc

ps: for some computer i tried out, if the ping is timeout everytime, is due to the windows or other software firewall which prevent u from pinging to other host. so you may want to off it 1st before do any ping. but please be cautious that offing the firewall means u vunerable to virus or other attack. so make sure there is a pro helping u wif it or u got any anti virus helping u to protect in the vunerable period.

is depends on places.. u can try by connect and disconnect ur modem manually.. usually i would disconnect the modem and reconnect again to get a new set of ip.. then i will ping around the world and choose which is the best.. whenever u get the best sets of ip, u record it down. then next time when u connect to internet. u can connect and disconnect until u get ur desired ip. though it would take long time but i think it worth the try..