can anybody help me i am experiancing random DC's in Warcraft 
but they only seem to happen in MC,AQ40 and BWL ect
i can quest and farm all day but as soon as i start doing the big instanes then its DC time
i have tryed updated my network card drivers even changed it
i have removed all Addons and even reinstalled game
also formatted pc i have opened up any ports that blizzard have suggested on my router
anybody able to help on this one i have read and tryed so many things its realy annoying
my spec at mo is
Ati x800xtpe
xp3200+
2gb geil
netgear dg834 v1 with netgear pci network card
1meg Nildram

but they only seem to happen in MC,AQ40 and BWL ect
i can quest and farm all day but as soon as i start doing the big instanes then its DC time

i have tryed updated my network card drivers even changed it
i have removed all Addons and even reinstalled game
also formatted pc i have opened up any ports that blizzard have suggested on my router
anybody able to help on this one i have read and tryed so many things its realy annoying

my spec at mo is
Ati x800xtpe
xp3200+
2gb geil
netgear dg834 v1 with netgear pci network card
1meg Nildram